Bug 1278752 (part 1) - Add a missing null check in PropertyTypeIncludes. r=bhackett.

--HG--
extra : rebase_source : 979c77b212a2a02bb2caef66540963760d944964

js/src/jit/MIR.cpp

@@ -6040,6 +6040,9 @@ PropertyTypeIncludes(TempAllocator& alloc, HeapTypeSetKey property,
             types = types->clone(alloc.lifoAlloc());
         else
             types = alloc.lifoAlloc()->new_<TemporaryTypeSet>();
+        if (!types) {
+            return false;
+        }
         types->addType(newType, alloc.lifoAlloc());
     }