Remove std::string uses from DebugInfo interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83083 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DbgInfoPrinter.cpp b/lib/Analysis/DbgInfoPrinter.cpp
index 8063476..2bbe2e0 100644
--- a/lib/Analysis/DbgInfoPrinter.cpp
+++ b/lib/Analysis/DbgInfoPrinter.cpp
@@ -91,9 +91,8 @@
 
 void PrintDbgInfo::printFuncStart(const DbgFuncStartInst *FS) {
   DISubprogram Subprogram(FS->getSubprogram());
-  std::string Res1, Res2;
-  Out << "; fully qualified function name: " << Subprogram.getDisplayName(Res1)
-      << " return type: " << Subprogram.getReturnTypeName(Res2)
+  Out << "; fully qualified function name: " << Subprogram.getDisplayName()
+      << " return type: " << Subprogram.getReturnTypeName()
       << " at line " << Subprogram.getLineNumber()
       << "\n\n";
 }