Make the assertion real.

llvm-svn: 58833
diff --git a/clang/lib/Analysis/RegionStore.cpp b/clang/lib/Analysis/RegionStore.cpp
index 04aa41e..2000d80 100644
--- a/clang/lib/Analysis/RegionStore.cpp
+++ b/clang/lib/Analysis/RegionStore.cpp
@@ -173,7 +173,7 @@
     return Base;
 
   default:
-    assert("Unhandled Base.");
+    assert(0 && "Unhandled Base.");
     return Base;
   }