CorrectDXGIFormat: fixed handling of D32S8 format #3457

Job	Run time
Linux -> Pre-checks	24s
Linux -> GCC-x64, Debug	11m 58s
Linux -> Clang-x64, Debug	12m 58s
Linux -> Clang-x64, Release	12m 50s
Linux -> Clang-NO_GLSLANG-x64, Debug	7m 43s
Linux -> Clang-NO_GLSLANG-NO_HLSL-x64, Release	6m 27s
Linux -> GCC-x64, Release	10m 41s
	1h 3m 1s

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