[llvm-objdump] Use std::make_unique

[tpr]

Summary

Fix up my recent commit to use std::make_unique instead of
std::unique_ptr(new), as requested by David Blaikie.

Change-Id: Ic683d584b06d8d29ccd8179984a05024f8e84d2a

[jhenderson]

LGTM. Could you post the actual Phabricator link to your previous patch or commit so that the link can be seen easily from this patch? Sufficient is DXXXXXX for the patch or rG<commit hash>.

[MaskRay]

We don't attach this Gerrit tag Change-Id: Ic683d584b06d8d29ccd8179984a05024f8e84d2a

[tpr]

Previous commit being fixed up: rG1128311a19179ceca799ff0fbc4dd206ab56e560
I will also added that to the commit message.

llvm/tools/llvm-objdump/llvm-objdump.cpp

static void addSymbolizer(
   std::vector<uint64_t> LabelAddrs;
   LabelAddrs.insert(LabelAddrs.end(), LabelAddrsRef.begin(),
                     LabelAddrsRef.end());
   llvm::sort(LabelAddrs);
   LabelAddrs.resize(std::unique(LabelAddrs.begin(), LabelAddrs.end()) -
                     LabelAddrs.begin());
   // Add the labels.
   for (unsigned LabelNum = 0; LabelNum != LabelAddrs.size(); ++LabelNum) {
-    std::unique_ptr<std::string> Name(new std::string);
+    auto Name = std::make_unique<std::string>();
     *Name = (Twine("L") + Twine(LabelNum)).str();
     SynthesizedLabelNames.push_back(std::move(Name));
     Symbols.push_back(SymbolInfoTy(
         LabelAddrs[LabelNum], *SynthesizedLabelNames.back(), ELF::STT_NOTYPE));
   }
   llvm::stable_sort(Symbols);
   // Recreate the symbolizer with the new symbols list.
   RelInfo.reset(Target->createMCRelocationInfo(TripleName, Ctx));