Use llvm::make_unique to try to fix the windows build.

llvm-svn: 308551
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
index a117a99..ac4ab25 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -1253,12 +1253,12 @@
 DWARFContext::create(const object::ObjectFile &Obj, const LoadedObjectInfo *L,
                      function_ref<ErrorPolicy(Error)> HandleError) {
   auto DObj = make_unique<DWARFObjInMemory>(Obj, L, HandleError);
-  return make_unique<DWARFContext>(std::move(DObj));
+  return llvm::make_unique<DWARFContext>(std::move(DObj));
 }
 
 std::unique_ptr<DWARFContext>
 DWARFContext::create(const StringMap<std::unique_ptr<MemoryBuffer>> &Sections,
                      uint8_t AddrSize, bool isLittleEndian) {
   auto DObj = make_unique<DWARFObjInMemory>(Sections, AddrSize, isLittleEndian);
-  return make_unique<DWARFContext>(std::move(DObj));
+  return llvm::make_unique<DWARFContext>(std::move(DObj));
 }