No reason to construct this twice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163567 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 946ac35..62bb5b7 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -326,7 +326,7 @@
       if (SPTag == dwarf::DW_TAG_subroutine_type)
         for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
           DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
-          DIType ATy = DIType(DIType(Args.getElement(i)));
+          DIType ATy = DIType(Args.getElement(i));
           SPCU->addType(Arg, ATy);
           if (ATy.isArtificial())
             SPCU->addFlag(Arg, dwarf::DW_AT_artificial);