Style cleanup in preparation for auto-linting base/.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/552004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@37164 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/file_descriptor_shuffle.h b/base/file_descriptor_shuffle.h
index 2592b80..e0cb88b 100644
--- a/base/file_descriptor_shuffle.h
+++ b/base/file_descriptor_shuffle.h
@@ -76,4 +76,4 @@
 
 }  // namespace base
 
-#endif  // !BASE_FILE_DESCRIPTOR_SHUFFLE_H_
+#endif  // BASE_FILE_DESCRIPTOR_SHUFFLE_H_