[ASTImporter] Fix for importing unnamed structs

Patch by Peter Szecsi!

Differential Revision: https://reviews.llvm.org/D30876

llvm-svn: 329301
diff --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp
index 6b9260d..2d9e1c8 100644
--- a/clang/lib/AST/ASTImporter.cpp
+++ b/clang/lib/AST/ASTImporter.cpp
@@ -1923,9 +1923,8 @@
       }
       
       if (RecordDecl *FoundRecord = dyn_cast<RecordDecl>(Found)) {
-        if (D->isAnonymousStructOrUnion() && 
-            FoundRecord->isAnonymousStructOrUnion()) {
-          // If both anonymous structs/unions are in a record context, make sure
+        if (!SearchName) {
+          // If both unnamed structs/unions are in a record context, make sure
           // they occur in the same location in the context records.
           if (Optional<unsigned> Index1 =
                   StructuralEquivalenceContext::findUntaggedStructOrUnionIndex(