Correct comment in the direct mode code.

(note, yes this is unrelated to the previous simplification, the
 code always behaved like it is documented now.)

Originally committed as revision 15378 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.c

@@ -987,7 +987,7 @@ static inline void pred_direct_motion(H264Context * const h, int *mb_type){
 #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
 
     if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
-            if(!IS_INTERLACED(*mb_type)){                //     AFR/FR    -> AFL
+        if(!IS_INTERLACED(*mb_type)){                    //     AFR/FR    -> AFL/FL
                 int cur_poc = s->current_picture_ptr->poc;
                 int *col_poc = h->ref_list[1]->field_poc;
                 int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);