Add missing header line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
index bf8c561..5da1f75 100644
--- a/lib/MC/MCMachOStreamer.cpp
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -1,3 +1,4 @@
+//===-- MCMachOStreamer.cpp - MachO Streamer ------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //