Do not use default for switch over AllocationSpace.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/262583004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21089 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap-inl.h

@@ -401,7 +401,7 @@ bool Heap::AllowedToBeMigrated(HeapObject* obj, AllocationSpace dst) {
     case PROPERTY_CELL_SPACE:
     case LO_SPACE:
       return false;
-    default:
+    case INVALID_SPACE:
       break;
   }
   UNREACHABLE();

src/heap.cc

@@ -4619,7 +4619,7 @@ bool Heap::InSpace(Address addr, AllocationSpace space) {
       return property_cell_space_->Contains(addr);
     case LO_SPACE:
       return lo_space_->SlowContains(addr);
-    default:
+    case INVALID_SPACE:
       break;
   }
   UNREACHABLE();