valgrind found motion vectors which exceeded frame boundaries

Bug introduced in I02d034c70cd97b65025d59dd67c695e1db529f0b


Change-Id: Ifb74ab659f3b3cf5f5b95046bacffb202d5b4d64

vp8/decoder/decodemv.c

@@ -293,25 +293,23 @@ static void decode_split_mv(vp8_reader *const bc, MODE_INFO *mi,
                     blockmv.as_mv.row += best_mv.as_mv.row;
                     blockmv.as_mv.col = read_mvcomponent(bc, &mvc[1]) << 1;
                     blockmv.as_mv.col += best_mv.as_mv.col;
+                }
+            }
+            else
+            {
+                blockmv.as_int = abovemv.as_int;
+            }
+        }
+        else
+        {
+            blockmv.as_int = leftmv.as_int;
+        }
 
         mbmi->need_to_clamp_mvs |= vp8_check_mv_bounds(&blockmv,
                                                   mb_to_left_edge,
                                                   mb_to_right_edge,
                                                   mb_to_top_edge,
                                                   mb_to_bottom_edge);
-                }
-            }
-            else
-            {
-                blockmv.as_int = abovemv.as_int;
-                mbmi->need_to_clamp_mvs |= above_mb->mbmi.need_to_clamp_mvs;
-            }
-        }
-        else
-        {
-            blockmv.as_int = leftmv.as_int;
-            mbmi->need_to_clamp_mvs |= left_mb->mbmi.need_to_clamp_mvs;
-        }
 
         {
             /* Fill (uniform) modes, mvs of jth subset.