More dead code removal (using -Wunreachable-code)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148577 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclarationName.cpp b/lib/AST/DeclarationName.cpp
index bf647ed..a5488e6 100644
--- a/lib/AST/DeclarationName.cpp
+++ b/lib/AST/DeclarationName.cpp
@@ -125,8 +125,8 @@
   case DeclarationName::CXXUsingDirective:
     return 0;
   }
-              
-  return 0;
+
+  llvm_unreachable("Invalid DeclarationName Kind!");
 }
 
 } // end namespace clang
@@ -189,7 +189,6 @@
 
       return ObjCMultiArgSelector;
     }
-    break;
   }
 
   // Can't actually get here.