[FFmpeg-devel] [PATCH] avcodec/x86/h264_idct: Fix incorrect xmm spilling on win64

[Henrik Gramner]

Broken in afa471d0efed1df5dca6eeeb2fcdd211ae4cad4e. It just happened
to work before due to x86inc.asm previously performing XMM spills in
INIT_MMX mode which was more of a bug than an intentional feature.
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