Flip red and blue in rct-less lossless jpeg.

Fixes issue1466, and decoding of plain lossless jpeg.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@20790 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/mjpegdec.c

@@ -674,9 +674,9 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point
             }
         }else{
             for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
-                ptr[4*mb_x+0] = buffer[mb_x][0];
+                ptr[4*mb_x+0] = buffer[mb_x][2];
                 ptr[4*mb_x+1] = buffer[mb_x][1];
-                ptr[4*mb_x+2] = buffer[mb_x][2];
+                ptr[4*mb_x+2] = buffer[mb_x][0];
             }
         }
     }