Debug Info: simplify code a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193001 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 79891eb..d2ba225 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -1376,7 +1376,7 @@
     addDIEEntry(SPDie, dwarf::DW_AT_specification, DeclDie);
 
     // Add subprogram definitions to the CU die directly.
-    CUDie.get()->addChild(SPDie);
+    addDie(SPDie);
 
     return SPDie;
   }