[dxgi] Do not interact with other DXGI objects during swapchain destr…

…uction

This trips up Stalker Anomaly for some reason, but initializing an output
is not meaningful anyway in this situation since we either know the output
in question already, or we don't and it cannot be in a non-default state.

Closes #3531.

src/dxgi/dxgi_swapchain.cpp

@@ -838,7 +838,7 @@ namespace dxvk {
 
     HRESULT hr = m_monitorInfo->AcquireMonitorData(hMonitor, ppData);
 
-    if (FAILED(hr)) {
+    if (FAILED(hr) && HasLiveReferences()) {
       // We may need to initialize a DXGI output to populate monitor data.
       // If acquiring monitor data has failed previously, do not try again.
       if (hMonitor == m_monitor && !m_monitorHasOutput)

src/util/com/com_object.h

@@ -68,10 +68,14 @@ namespace dxvk {
       }
     }
 
-    ULONG GetPrivateRefCount() {
+    ULONG GetPrivateRefCount() const {
       return m_refPrivate.load();
     }
-
+
+    bool HasLiveReferences() const {
+      return bool(m_refCount.load() | m_refPrivate.load());
+    }
+
   protected:
 
     std::atomic<uint32_t> m_refCount   = { 0ul };