Fix a truly egregious thinko in anonymous namespace check,
update testcase to make sure we generate debug info for walrus
by adding a non-trivial constructor and verify that we don't
emit an ODR signature for the type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187393 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 8735442..12caa8e 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1074,8 +1074,8 @@
   DIE *Parent = Die->getParent();
 
   while (Parent) {
-    if (Die->getTag() == dwarf::DW_TAG_namespace &&
-        getDIEStringAttr(Die, dwarf::DW_AT_name) == "")
+    if (Parent->getTag() == dwarf::DW_TAG_namespace &&
+        getDIEStringAttr(Parent, dwarf::DW_AT_name) == "")
       return true;
     Parent = Parent->getParent();
   }