avcodec/error_resilience: make error an local variable where possible

This makes the code easier to understand as the scope of the variable is
smaller.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/error_resilience.c

@@ -1057,7 +1057,7 @@ void ff_er_frame_end(ERContext *s)
     if (!s->partitioned_frame) {
         for (i = 0; i < s->mb_num; i++) {
             const int mb_xy = s->mb_index2xy[i];
-            error = s->error_status_table[mb_xy];
+            int error = s->error_status_table[mb_xy];
             if (error & ER_MB_ERROR)
                 error |= ER_MB_ERROR;
             s->error_status_table[mb_xy] = error;
@@ -1068,7 +1068,7 @@ void ff_er_frame_end(ERContext *s)
     dc_error = ac_error = mv_error = 0;
     for (i = 0; i < s->mb_num; i++) {
         const int mb_xy = s->mb_index2xy[i];
-        error = s->error_status_table[mb_xy];
+        int error = s->error_status_table[mb_xy];
         if (error & ER_DC_ERROR)
             dc_error++;
         if (error & ER_AC_ERROR)
@@ -1084,7 +1084,7 @@ void ff_er_frame_end(ERContext *s)
     /* set unknown mb-type to most likely */
     for (i = 0; i < s->mb_num; i++) {
         const int mb_xy = s->mb_index2xy[i];
-        error = s->error_status_table[mb_xy];
+        int error = s->error_status_table[mb_xy];
         if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
             continue;
 
@@ -1112,7 +1112,7 @@ void ff_er_frame_end(ERContext *s)
             const int mv_dir  = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
             int mv_type;
 
-            error = s->error_status_table[mb_xy];
+            int error = s->error_status_table[mb_xy];
 
             if (IS_INTRA(mb_type))
                 continue; // intra
@@ -1149,7 +1149,7 @@ void ff_er_frame_end(ERContext *s)
                 const int mb_type = s->cur_pic.mb_type[mb_xy];
                 int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
 
-                error = s->error_status_table[mb_xy];
+                int error = s->error_status_table[mb_xy];
 
                 if (IS_INTRA(mb_type))
                     continue;
@@ -1253,7 +1253,7 @@ void ff_er_frame_end(ERContext *s)
             const int mb_xy   = mb_x + mb_y * s->mb_stride;
             const int mb_type = s->cur_pic.mb_type[mb_xy];
 
-            error = s->error_status_table[mb_xy];
+            int error = s->error_status_table[mb_xy];
 
             if (IS_INTER(mb_type))
                 continue;