gh-111178: Fix function signatures in genobject.c #127915

Job	Run time
Change detection / Compute changed files	10s
Check if generated files are up to date	4m 59s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.0.15)	2m 33s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.1.7)	1m 55s
Windows MSI${{ '' }}	0s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.2.3)	2m 5s
Docs	0s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.3.2)	2m 29s
Address sanitizer	7m 33s
CIFuzz (address)	19m 40s
Hypothesis tests on Ubuntu	5m 37s
CIFuzz (undefined)	21m 7s
CIFuzz (memory)	21m 3s
Thread sanitizer / Thread sanitizer	4m 39s
Thread sanitizer (free-threading) / Thread sanitizer	7m 17s
WASI / build and test	6m 12s
macOS (free-threading) / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	5m 58s
macOS / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	6m 30s
Ubuntu / build and test (ubuntu-22.04)	6m 37s
macOS / build and test (macos-13)	12m 41s
Ubuntu (free-threading) / build and test (ubuntu-22.04)	9m 59s
Windows / build (arm64)	2m 51s
Windows (free-threading) / build (arm64)	2m 14s
Windows / build and test (Win32)	16m 15s
Windows (free-threading) / build and test (Win32)	23m 24s
Windows / build and test (x64)	15m 42s
Windows (free-threading) / build and test (x64)	22m 43s
All required checks pass	2s
	3h 52m 15s

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