Remove unused variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147261 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Object/ObjectFile.cpp b/lib/Object/ObjectFile.cpp
index d051c03..b14df9a 100644
--- a/lib/Object/ObjectFile.cpp
+++ b/lib/Object/ObjectFile.cpp
@@ -58,7 +58,7 @@
 
 ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) {
   OwningPtr<MemoryBuffer> File;
-  if (error_code ec = MemoryBuffer::getFile(ObjectPath, File))
+  if (MemoryBuffer::getFile(ObjectPath, File))
     return NULL;
   return createObjectFile(File.take());
 }