More dead code removal (using -Wunreachable-code)

llvm-svn: 148577
diff --git a/clang/lib/CodeGen/CGException.cpp b/clang/lib/CodeGen/CGException.cpp
index 7600c48..e1eefc0 100644
--- a/clang/lib/CodeGen/CGException.cpp
+++ b/clang/lib/CodeGen/CGException.cpp
@@ -636,8 +636,7 @@
     return false;
   }
 
-  // Suppress warning.
-  return false;
+  llvm_unreachable("Invalid EHScope Kind!");
 }
 
 llvm::BasicBlock *CodeGenFunction::getInvokeDestImpl() {