avcodec/ratecontrol: Move emms_c() to the only callsite needing it

Namely to one of the three callsites in snowenc.c.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/ratecontrol.c

@@ -26,7 +26,6 @@
  */
 
 #include "libavutil/attributes.h"
-#include "libavutil/emms.h"
 #include "libavutil/internal.h"
 #include "libavutil/mem.h"
 
@@ -924,7 +923,6 @@ float ff_rate_estimate_qscale(MPVMainEncContext *const m, int dry_run)
     double rate_factor;
     int64_t var;
     const int pict_type = s->c.pict_type;
-    emms_c();
 
     get_qminmax(&qmin, &qmax, m, pict_type);
 

libavcodec/snowenc.c

@@ -1700,6 +1700,7 @@ static int ratecontrol_1pass(SnowEncContext *enc, AVFrame *pict)
                     coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
         }
     }
+    emms_c();
 
     /* ugly, ratecontrol just takes a sqrt again */
     av_assert0(coef_sum < INT_MAX);