[Object] Remove redundant std::move.

Found by -Wpessimizing-move.

llvm-svn: 305595
diff --git a/llvm/lib/Object/WindowsResource.cpp b/llvm/lib/Object/WindowsResource.cpp
index 1b62f51..ed3f97c 100644
--- a/llvm/lib/Object/WindowsResource.cpp
+++ b/llvm/lib/Object/WindowsResource.cpp
@@ -353,7 +353,7 @@
       StringTable(Parser.getStringTable()) {
   performFileLayout();
 
-  OutputBuffer = std::move(MemoryBuffer::getNewMemBuffer(FileSize));
+  OutputBuffer = MemoryBuffer::getNewMemBuffer(FileSize);
 }
 
 void WindowsResourceCOFFWriter::performFileLayout() {