avoid deprecation warnings for ImgReSampleContext from avcodec.h

Originally committed as revision 9568 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/avcodec.h

@@ -2220,11 +2220,6 @@ void av_resample_close(struct AVResampleContext *c);
 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
 /* YUV420 format is assumed ! */
 
-/**
- * @deprecated Use the software scaler (swscale) instead.
- */
-struct ImgReSampleContext attribute_deprecated;
-
 /**
  * @deprecated Use the software scaler (swscale) instead.
  */
@@ -2249,13 +2244,13 @@ attribute_deprecated ImgReSampleContext *img_resample_full_init(int owidth, int
 /**
  * @deprecated Use the software scaler (swscale) instead.
  */
-attribute_deprecated void img_resample(ImgReSampleContext *s,
+attribute_deprecated void img_resample(struct ImgReSampleContext *s,
                   AVPicture *output, const AVPicture *input);
 
 /**
  * @deprecated Use the software scaler (swscale) instead.
  */
-attribute_deprecated void img_resample_close(ImgReSampleContext *s);
+attribute_deprecated void img_resample_close(struct ImgReSampleContext *s);
 
 #endif