x86: Place mm_flags variable declaration below the appropriate #ifdef.

This fixes some unused variable warnings with YASM disabled.

libavcodec/x86/fmtconvert_mmx.c

@@ -110,9 +110,9 @@ static void float_interleave_sse(float *dst, const float **src,
 
 void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
 {
+#if HAVE_YASM
     int mm_flags = av_get_cpu_flags();
 
-#if HAVE_YASM
     if (mm_flags & AV_CPU_FLAG_MMX) {
         c->float_interleave = float_interleave_mmx;
 

libavcodec/x86/rv40dsp.c

@@ -42,9 +42,9 @@ void ff_avg_rv40_chroma_mc4_3dnow(uint8_t *dst, uint8_t *src,
 
 void ff_rv40dsp_init_x86(RV34DSPContext *c, DSPContext *dsp)
 {
-    av_unused int mm_flags = av_get_cpu_flags();
-
 #if HAVE_YASM
+    int mm_flags = av_get_cpu_flags();
+
     if (mm_flags & AV_CPU_FLAG_MMX) {
         c->put_chroma_pixels_tab[0] = ff_put_rv40_chroma_mc8_mmx;
         c->put_chroma_pixels_tab[1] = ff_put_rv40_chroma_mc4_mmx;