Renaming the chains() ranged iterator to chain() per suggestion by Richard Smith.

llvm-svn: 203262
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index b96aed9..259c003 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -562,7 +562,7 @@
     new (SemaRef.Context)NamedDecl*[D->getChainingSize()];
 
   int i = 0;
-  for (auto *PI : D->chains()) {
+  for (auto *PI : D->chain()) {
     NamedDecl *Next = SemaRef.FindInstantiatedDecl(D->getLocation(), PI,
                                               TemplateArgs);
     if (!Next)