Make the assertion real.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58833 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/RegionStore.cpp b/lib/Analysis/RegionStore.cpp
index 04aa41e..2000d80 100644
--- a/lib/Analysis/RegionStore.cpp
+++ b/lib/Analysis/RegionStore.cpp
@@ -173,7 +173,7 @@
     return Base;
 
   default:
-    assert("Unhandled Base.");
+    assert(0 && "Unhandled Base.");
     return Base;
   }