DebugInfo: Don't print DIEs multiple times.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139671 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFDebugInfoEntry.h b/lib/DebugInfo/DWARFDebugInfoEntry.h
index 0b0a00c..5e7b89b 100644
--- a/lib/DebugInfo/DWARFDebugInfoEntry.h
+++ b/lib/DebugInfo/DWARFDebugInfoEntry.h
@@ -33,6 +33,9 @@
 
   const DWARFAbbreviationDeclaration *AbbrevDecl;
 public:
+  DWARFDebugInfoEntryMinimal()
+    : Offset(0), ParentIdx(0), SiblingIdx(0), AbbrevDecl(0) {}
+
   void dump(raw_ostream &OS, const DWARFCompileUnit *cu,
             unsigned recurseDepth, unsigned indent = 0) const;
   void dumpAttribute(raw_ostream &OS, const DWARFCompileUnit *cu,