gh-123290: curses: fix reference leaks in error-branches and cleanup module's initialization #124997

Job	Run time
Change detection / Compute changed files	13s
Check if generated files are up to date	5m 3s
Windows MSI${{ '' }}	0s
Address sanitizer	5m 39s
Docs	0s
Ubuntu SSL tests with OpenSSL (3.0.15)	2m 4s
CIFuzz (address)	5m 26s
Ubuntu SSL tests with OpenSSL (3.1.7)	2m 4s
Hypothesis tests on Ubuntu	5m 25s
CIFuzz (undefined)	5m 24s
Ubuntu SSL tests with OpenSSL (3.2.3)	2m 14s
CIFuzz (memory)	5m 24s
Ubuntu SSL tests with OpenSSL (3.3.2)	1m 58s
Thread sanitizer / Thread sanitizer	4m 36s
Thread sanitizer (free-threading) / Thread sanitizer	5m 39s
WASI / build and test	5m 38s
Windows / build (arm64)	2m 59s
Windows (free-threading) / build (arm64)	2m 59s
Windows / build and test (Win32)	5m 21s
Windows (free-threading) / build and test (Win32)	5m 22s
macOS (free-threading) / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	5m 26s
macOS / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	5m 26s
Windows / build and test (x64)	5m 22s
Windows (free-threading) / build and test (x64)	5m 22s
macOS / build and test (macos-13)	5m 40s
Ubuntu (free-threading) / build and test	5m 36s
Ubuntu / build and test	5m 38s
All required checks pass	1s
	1h 51m 59s

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