fix: crash when stash message is null #3445

Job	Run time
Prepare version string	4s
Build / Build Windows ARM64	3m 40s
Build / Build macOS (Apple Silicon)	3m 10s
Build / Build Linux	3m 32s
Build / Build Linux (arm64)	3m 15s
Build / Build Windows x64	3m 21s
Build / Build macOS (Intel)	3m 13s
Package / Package macOS (osx-x64)	21s
Package / Package macOS (osx-arm64)	19s
Package / Package Windows (win-arm64)	18s
Package / Package Linux (linux-x64)	51s
Package / Package Linux (linux-arm64)	59s
Package / Package Windows (win-x64)	18s
	23m 21s

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