Fix LookupResult's sanity-check to handle shadow decls.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89624 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Lookup.h b/lib/Sema/Lookup.h
index 87d0c0d..b305906 100644
--- a/lib/Sema/Lookup.h
+++ b/lib/Sema/Lookup.h
@@ -450,7 +450,8 @@
     assert(ResultKind != NotFound || Decls.size() == 0);
     assert(ResultKind != Found || Decls.size() == 1);
     assert(ResultKind != FoundOverloaded || Decls.size() > 1 ||
-           (Decls.size() == 1 && isa<FunctionTemplateDecl>(Decls[0])));
+           (Decls.size() == 1 &&
+            isa<FunctionTemplateDecl>(Decls[0]->getUnderlyingDecl())));
     assert(ResultKind != FoundUnresolvedValue || sanityCheckUnresolved());
     assert(ResultKind != Ambiguous || Decls.size() > 1 ||
            (Decls.size() == 1 && Ambiguity == AmbiguousBaseSubobjects));