dsymutil: Fix the condition to distinguish module imports form definitions.

llvm-svn: 248512
diff --git a/llvm/tools/dsymutil/DwarfLinker.cpp b/llvm/tools/dsymutil/DwarfLinker.cpp
index 1aa15c5..8489189 100644
--- a/llvm/tools/dsymutil/DwarfLinker.cpp
+++ b/llvm/tools/dsymutil/DwarfLinker.cpp
@@ -1780,7 +1780,7 @@
   //   definitions match)."
   //
   // We treat non-C++ modules like namespaces for this reason.
-  if (DIE->getTag() == dwarf::DW_TAG_module &&
+  if (DIE->getTag() == dwarf::DW_TAG_module && ParentIdx == 0 &&
       DIE->getAttributeValueAsString(&CU.getOrigUnit(), dwarf::DW_AT_name,
                                      "") != CU.getClangModuleName()) {
     InImportedModule = true;