Return false if we encounter a type we can't handle.

llvm-svn: 59889
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index 5c5adb6..6fba884 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -1176,7 +1176,8 @@
   } else if (getType()->isComplexType()) {
     if (!EvaluateComplexFloat(this, Result, Info))
       return false;
-  }    
+  }  else
+    return false;
 
   if (isEvaluated)
     *isEvaluated = Info.isEvaluated;