Simplify intra4x4_pred_mode_cache init.

Originally committed as revision 22054 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.h

@@ -888,16 +888,10 @@ static void fill_decode_caches(H264Context *h, int mb_type){
                 if(IS_INTRA4x4(top_type)){
                     AV_COPY32(h->intra4x4_pred_mode_cache+4+8*0, h->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
                 }else{
-                    int pred;
-                    if(!(top_type & type_mask))
-                        pred= -1;
-                    else{
-                        pred= 2;
-                    }
                     h->intra4x4_pred_mode_cache[4+8*0]=
                     h->intra4x4_pred_mode_cache[5+8*0]=
                     h->intra4x4_pred_mode_cache[6+8*0]=
-                    h->intra4x4_pred_mode_cache[7+8*0]= pred;
+                    h->intra4x4_pred_mode_cache[7+8*0]= 2 - 3*!(top_type & type_mask);
                 }
                 for(i=0; i<2; i++){
                     if(IS_INTRA4x4(left_type[i])){
@@ -905,14 +899,8 @@ static void fill_decode_caches(H264Context *h, int mb_type){
                         h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= mode[6-left_block[0+2*i]];
                         h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= mode[6-left_block[1+2*i]];
                     }else{
-                        int pred;
-                        if(!(left_type[i] & type_mask))
-                            pred= -1;
-                        else{
-                            pred= 2;
-                        }
                         h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
-                        h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
+                        h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= 2 - 3*!(left_type[i] & type_mask);
                     }
                 }
             }