Fixes OSX segfault on unload

aroden-crowdstrike · aroden-crowdstrike · commit 066954a8c8dd · 2017-12-04T13:08:45.000-05:00
* Refs rust-lang/rust#28794
diff --git a/rure/lib.py b/rure/lib.py
@@ -34,7 +34,7 @@ def find_library():
     return os.path.join(cur_dir, "{}{}.{}".format(prefix, libname, suffix))
 
 
-_lib = ffi.dlopen(find_library())
+_lib = ffi.dlopen(find_library(), ffi.RTLD_NODELETE)
 
 
 def checked_call(fn, err, *args):
