[ASTImporter] Removed uneeded default case label.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@344784 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index 200214b2445b4cb6324717acf040e0377f9801f3..ec345bb4db869108ebebfdb665173231b0104e48 100644 (file)
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -89,9 +89,9 @@ namespace clang {
       return "UnsupportedConstruct";
     case Unknown:
       return "Unknown error";
-    default:
-      llvm_unreachable("Invalid error code.");
     }
+    llvm_unreachable("Invalid error code.");
+    return "Invalid error code.";
   }
 
   void ImportError::log(raw_ostream &OS) const {