Object: Add support for opening stdin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141449 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Object/Binary.cpp b/lib/Object/Binary.cpp
index 3b00beb..4e528d8 100644
--- a/lib/Object/Binary.cpp
+++ b/lib/Object/Binary.cpp
@@ -97,7 +97,7 @@
 
 error_code object::createBinary(StringRef Path, OwningPtr<Binary> &Result) {
   OwningPtr<MemoryBuffer> File;
-  if (error_code ec = MemoryBuffer::getFile(Path, File))
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Path, File))
     return ec;
   return createBinary(File.take(), Result);
 }