Add fflush to prevent stdout & stderr from being mixed.

git-svn-id: file:///var/local/repositories/mplayer/trunk/libswscale@27515 b3059339-0415-0410-9bf9-f77b7e298cf2

swscale-example.c

@@ -139,6 +139,7 @@ static int doTest(uint8_t *ref[3], int refStride[3], int w, int h, int srcFormat
                sws_format_name(dstFormat), dstW, dstH,
                flags,
                ssdY, ssdU, ssdV);
+        fflush(stdout);
     }
 
     end:
@@ -170,6 +171,7 @@ static void selfTest(uint8_t *src[3], int stride[3], int w, int h){
             printf("%s -> %s\n",
                    sws_format_name(srcFormat),
                    sws_format_name(dstFormat));
+            fflush(stdout);
 
             srcW= w;
             srcH= h;