Switch assert(0/false) llvm_unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaCXXScopeSpec.cpp b/lib/Sema/SemaCXXScopeSpec.cpp
index a2cef9c..90fd7cd 100644
--- a/lib/Sema/SemaCXXScopeSpec.cpp
+++ b/lib/Sema/SemaCXXScopeSpec.cpp
@@ -137,7 +137,7 @@
 
   switch (NNS->getKind()) {
   case NestedNameSpecifier::Identifier:
-    assert(false && "Dependent nested-name-specifier has no DeclContext");
+    llvm_unreachable("Dependent nested-name-specifier has no DeclContext");
     break;
 
   case NestedNameSpecifier::Namespace: