tiff image decoder uses get_buffer, set CODEC_CAP_DR1

Originally committed as revision 19108 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/tiff.c

@@ -542,7 +542,7 @@ AVCodec tiff_decoder = {
     NULL,
     tiff_end,
     decode_frame,
-    0,
+    CODEC_CAP_DR1,
     NULL,
     .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
 };