file.c: unnecessary #undef

* file.c (flock): remove unnecessary #undef flock, trace of green
  thread polling.  patched by Rohan Garg.  [Bug #10551]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48629 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 1 deletions

diff --git a/file.c b/file.c
index d47db558f4..803ca30e76 100644
--- a/file.c
+++ b/file.c
@@ -4551,7 +4551,6 @@ rb_file_flock(VALUE obj, VALUE operation)
     }
     return INT2FIX(0);
 }
-#undef flock
 
 static void
 test_check(int n, int argc, VALUE *argv)