Fix Win64 AVX h264_deblock by not using redzone on Win64

Thanks-to: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 82a4a4e7caa96cea9aa2185c4c3110a5e9fde7c2)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
diff --git a/libavcodec/x86/h264_deblock.asm b/libavcodec/x86/h264_deblock.asm
index 8ac38fc..5f2374d 100644
--- a/libavcodec/x86/h264_deblock.asm
+++ b/libavcodec/x86/h264_deblock.asm
@@ -625,7 +625,11 @@
     %define t5 m11
     %define mask0 m12
     %define mask1p m13
+%if WIN64
+    %define mask1q [rsp]
+%else
     %define mask1q [rsp-24]
+%endif
     %define mpb_0 m14
     %define mpb_1 m15
 %else
@@ -644,7 +648,11 @@
 ;-----------------------------------------------------------------------------
 ; void deblock_v_luma_intra( uint8_t *pix, int stride, int alpha, int beta )
 ;-----------------------------------------------------------------------------
+%if WIN64
+cglobal deblock_%1_luma_intra_8, 4,6,16,0x10
+%else
 cglobal deblock_%1_luma_intra_8, 4,6,16,ARCH_X86_64*0x50-0x50
+%endif
     lea     r4, [r1*4]
     lea     r5, [r1*3] ; 3*stride
     dec     r2d        ; alpha-1