types-struct: fix mat4x2s struct members #84

Job	Run time
build_wasi_sdk (Release, 19)	29s
build_wasi_sdk (Release, 20)	28s
build_wasi_sdk (Release, -msimd128, 19)	33s
build_wasi_sdk (Release, -msimd128, 20)	27s
build_wasi_sdk (Debug, 19)	25s
build_wasi_sdk (Debug, 20)	28s
build_wasi_sdk (Debug, -msimd128, 19)	34s
build_wasi_sdk (Debug, -msimd128, 20)	29s
build_wasi_sdk (RelWithDebInfo, 19)	26s
build_wasi_sdk (RelWithDebInfo, 20)	30s
build_wasi_sdk (RelWithDebInfo, -msimd128, 19)	31s
build_wasi_sdk (RelWithDebInfo, -msimd128, 20)	31s
build_wasi_sdk (MinSizeRel, 19)	26s
build_wasi_sdk (MinSizeRel, 20)	26s
build_wasi_sdk (MinSizeRel, -msimd128, 19)	32s
build_wasi_sdk (MinSizeRel, -msimd128, 20)	29s
build_emsdk (Release)	1m 9s
build_emsdk (Release, -msimd128)	1m 8s
build_emsdk (Release, -msse -msse2 -msimd128)	1m 12s
build_emsdk (Release, -msse -msse2 -msse3 -msse4 -msimd128)	1m 24s
build_emsdk (Debug)	1m 15s
build_emsdk (Debug, -msimd128)	1m 14s
build_emsdk (Debug, -msse -msse2 -msimd128)	1m 26s
build_emsdk (Debug, -msse -msse2 -msse3 -msse4 -msimd128)	1m 31s
build_emsdk (RelWithDebInfo)	1m 6s
build_emsdk (RelWithDebInfo, -msimd128)	1m 15s
build_emsdk (RelWithDebInfo, -msse -msse2 -msimd128)	1m 13s
build_emsdk (RelWithDebInfo, -msse -msse2 -msse3 -msse4 -msimd128)	1m 12s
build_emsdk (MinSizeRel)	1m 23s
build_emsdk (MinSizeRel, -msimd128)	1m 8s
build_emsdk (MinSizeRel, -msse -msse2 -msimd128)	1m 20s
build_emsdk (MinSizeRel, -msse -msse2 -msse3 -msse4 -msimd128)	1m 9s
	27m 49s

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