Remove unused argument.

llvm-svn: 178987
diff --git a/llvm/lib/Object/COFFObjectFile.cpp b/llvm/lib/Object/COFFObjectFile.cpp
index ca90e0e..46acd4d 100644
--- a/llvm/lib/Object/COFFObjectFile.cpp
+++ b/llvm/lib/Object/COFFObjectFile.cpp
@@ -429,7 +429,7 @@
 }
 
 COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &ec)
-  : ObjectFile(Binary::ID_COFF, Object, ec)
+  : ObjectFile(Binary::ID_COFF, Object)
   , Header(0)
   , SectionTable(0)
   , SymbolTable(0)