WPP

Replace wrong ReadGuid call in wotlk classic #1080

Job	Run time
build (ubuntu-latest, Release)	1m 26s
build (ubuntu-latest, Debug)	1m 24s
build (windows-latest, Debug)	3m 0s
build (windows-latest, Release)	3m 0s
build (macos-14, Release)	1m 8s
build (macos-14, Debug)	1m 24s
	11m 22s

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