pixdesc: Include more functions in FF_DISABLE_DEPRECATION_WARNINGS

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavutil/pixdesc.c

@@ -2049,7 +2049,6 @@ enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
 
     return desc - av_pix_fmt_descriptors;
 }
-FF_ENABLE_DEPRECATION_WARNINGS
 
 int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
                                      int *h_shift, int *v_shift)
@@ -2118,6 +2117,7 @@ void ff_check_pixfmt_descriptors(void){
         }
     }
 }
+FF_ENABLE_DEPRECATION_WARNINGS
 
 
 enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)