Fix chaining of ObjCInterfaceDecl redeclarations

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146722 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index ac3b536..963643e 100644
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -3182,7 +3182,8 @@
     if (!ToIface) {
       ToIface = ObjCInterfaceDecl::Create(Importer.getToContext(), DC,
                                           Importer.Import(D->getAtStartLoc()),
-                                          Name.getAsIdentifierInfo(), Loc,
+                                          Name.getAsIdentifierInfo(), 
+                                          /*PrevDecl=*/0,Loc,
                                           D->isImplicitInterfaceDecl());
       ToIface->setLexicalDeclContext(LexicalDC);
       LexicalDC->addDeclInternal(ToIface);