Fix typo.

llvm-svn: 128921
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 2421296..5ae3874 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -1534,6 +1534,10 @@
   FnBeginRegionCount.push_back(RegionStack.size());
 
   const Decl *D = GD.getDecl();
+  if (const ClassTemplateSpecializationDecl *TSpecial
+      = dyn_cast<ClassTemplateSpecializationDecl>(D))
+    assert (0 && "Got one!");
+
   unsigned Flags = 0;
   llvm::DIFile Unit = getOrCreateFile(CurLoc);
   llvm::DIDescriptor FDContext(Unit);