avcodec/imgconvert/get_color_type: fix type for PAL8

Fixes Ticket3008

Fate changes as PAL8 gets used instead of BGR8
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/imgconvert.c

@@ -71,6 +71,9 @@ void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int
 }
 
 static int get_color_type(const AVPixFmtDescriptor *desc) {
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL)
+        return FF_COLOR_RGB;
+
     if(desc->nb_components == 1 || desc->nb_components == 2)
         return FF_COLOR_GRAY;
 

tests/ref/lavf/gif

-e35f5ea283bbcb249818e0078ec72664 *./tests/data/lavf/lavf.gif
-2011766 ./tests/data/lavf/lavf.gif
+8aef8081e8afa445f63f320f4a1c5edb *./tests/data/lavf/lavf.gif
+2030198 ./tests/data/lavf/lavf.gif
 ./tests/data/lavf/lavf.gif CRC=0x0dc5477c