memory leaks in Context::openStream

[ZZZZZZGary]

When I use the leaks tool in MacOS, it reports a leak.

#-> leaks 93838
Process 93838 is not debuggable. Due to security restrictions, leaks can only show or save contents of readonly memory of restricted processes.

Process:         **** [93838]
Path:            ****
Load Address:    0x102044000
Identifier:      ****
Version:         1.0 (1)
Code Type:       ARM64
Platform:        macOS
Parent Process:  zsh [27483]

Date/Time:       2024-09-19 17:08:26.659 +0800
Launch Time:     2024-09-19 17:08:03.996 +0800
OS Version:      macOS 14.6.1 (23G93)
Report Version:  7
Analysis Tool:   /Applications/Xcode.app/Contents/Developer/usr/bin/leaks
Analysis Tool Version:  Xcode 15.4 (15F31d)

Physical footprint:         217.1M
Physical footprint (peak):  229.5M
Idle exit:                  untracked
----

leaks Report Version: 4.0, multi-line stacks
Process 93838: 290323 nodes malloced for 112436 KB
Process 93838: 32 leaks for 2496 total leaked bytes.

STACK OF 10 INSTANCES OF 'ROOT LEAK: <IOUSBDeviceClass>':
15  dyld                                  0x180907154 start + 2476
14  ****                        0x10209482c main + 148  main.cpp:47
13  ****                        0x10208ac50 ****
12  ****                        0x1021f617c ****
11  ****                        0x1021f4af4 ****
10  ****                        0x1021f513c ****
9   ****                        0x1021f1158 ****
8   ****                        0x102249df4 Context::openStream(unsigned int, unsigned int) + 136
7   ****                        0x10224c83c PlatformStream::open(Context*, deviceInfo*, unsigned int, unsigned int, unsigned int, unsigned int) + 1504
6   ****                        0x10224cca8 UVCCtrl::findDevice(unsigned short, unsigned short, unsigned int) + 328
5   com.apple.framework.IOKit             0x184457564 IOCreatePlugInInterfaceForService + 676
4   com.apple.CoreFoundation              0x180de3508 CFPlugInInstanceCreate + 300
3   com.apple.CoreFoundation              0x180de3764 __CFPLUGIN_IS_CALLING_OUT_TO_A_FACTORY_FUNCTION__ + 28
2   com.apple.iokit.IOUSBLib              0x1031df894 IOUSBDeviceClass::alloc() + 24
1   libc++abi.dylib                       0x180c4abd4 operator new(unsigned long) + 32
0   libsystem_malloc.dylib                0x180acba68 _malloc_zone_malloc_instrumented_or_legacy + 148 
====
    32 (2.44K) << TOTAL >>

      5 (496 bytes) ROOT LEAK: <IOUSBDeviceClass 0x11f7e0170> [144]
         4 (352 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x11f7dec80> [32]
            1 (128 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11f7e04e0> [128]
            1 (112 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11f7e0560> [112]
            1 (80 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11f7e0490> [80]

      3 (256 bytes) ROOT LEAK: <IOUSBDeviceClass 0x116007640> [144]
         2 (112 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x1208ae580> [16]
            1 (96 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x1208af320> [96]

      3 (256 bytes) ROOT LEAK: <IOUSBDeviceClass 0x11f7e0200> [144]
         2 (112 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x1208ae240> [16]
            1 (96 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x1208af1e0> [96]

      3 (240 bytes) ROOT LEAK: <IOUSBDeviceClass 0x1208ad150> [144]
         2 (96 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x11602d320> [16]
            1 (80 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11602e610> [80]

      3 (224 bytes) ROOT LEAK: <IOUSBDeviceClass 0x11f7dfde0> [144]
         2 (80 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x1208ae980> [16]
            1 (64 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x1208aeec0> [64]

      3 (208 bytes) ROOT LEAK: <IOUSBDeviceClass 0x116007a50> [144]
         2 (64 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x1208ae970> [16]
            1 (48 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x1208af450> [48]

      3 (208 bytes) ROOT LEAK: <IOUSBDeviceClass 0x11f7dfd10> [144]
         2 (64 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x11f7dfb70> [16]
            1 (48 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11f7e0140> [48]

      3 (208 bytes) ROOT LEAK: <IOUSBDeviceClass 0x1208ad0c0> [144]
         2 (64 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x11f7df360> [16]
            1 (48 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11f7e06e0> [48]

      3 (208 bytes) ROOT LEAK: <IOUSBDeviceClass 0x1208ade90> [144]
         2 (64 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x11f7df290> [16]
            1 (48 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x11f7e02c0> [48]

      3 (192 bytes) ROOT LEAK: <IOUSBDeviceClass 0x1208aec90> [144]
         2 (48 bytes) <malloc in IOUSBDeviceClass::start(__CFDictionary const*, unsigned int) 0x1208ae590> [16]
            1 (32 bytes) <malloc in IOUSBDeviceClass::CacheConfigDescriptor() 0x12088f270> [32]