+ video_chroma/i420_yuy2.c : fixed conversion for non-multiple-of-8

                              widths (MMX untested)

modules/video_chroma/i420_yuy2.c

@@ -262,17 +262,21 @@ static void I420_YUY2( vout_thread_t *p_vout, picture_t *p_source,
         p_y1 = p_y2;
         p_y2 += p_source->p[Y_PLANE].i_pitch;
 
-        for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
-        {
 #if !defined (MODULE_NAME_IS_i420_yuy2_mmx)
+        for( i_x = p_vout->render.i_width / 2 ; i_x-- ; )
+        {
             C_YUV420_YUYV( );
-            C_YUV420_YUYV( );
-            C_YUV420_YUYV( );
-            C_YUV420_YUYV( );
+        }
 #else
+        for( i_x = p_vout->render.i_width / 8 ; i_x-- ; )
+        {
             MMX_CALL( MMX_YUV420_YUYV );
-#endif
         }
+        for( i_x = ( p_vout->render.i_width % 8 ) / 2; i_x-- ; )
+        {
+            C_YUV420_YUYV( );
+        }
+#endif
 
         p_y1 += i_source_margin;
         p_y2 += i_source_margin;