Module debugging: Don't emit forward declarations in module scopes.
A forward declaration inside a module header does not belong to the module.

llvm-svn: 249157
diff --git a/clang/test/Modules/ModuleDebugInfo.m b/clang/test/Modules/ModuleDebugInfo.m
index 36a151c..8139343 100644
--- a/clang/test/Modules/ModuleDebugInfo.m
+++ b/clang/test/Modules/ModuleDebugInfo.m
@@ -41,3 +41,6 @@
 // MODULE-CHECK: !DICompositeType(tag: DW_TAG_structure_type,
 // MODULE-CHECK-SAME:             name: "ObjCClass",
 // MODULE-CHECK-SAME:             scope: ![[MODULE]],
+
+// The forward declaration should not be in the module scope.
+// MODULE-CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "OpaqueData", file