git_remote_push: document that NULL refspecs allowed
diff --git a/include/git2/remote.h b/include/git2/remote.h
index 244794e..e9e4e5b 100644
--- a/include/git2/remote.h
+++ b/include/git2/remote.h
@@ -715,8 +715,8 @@ GIT_EXTERN(int) git_remote_prune(git_remote *remote, const git_remote_callbacks
* Peform all the steps from a push.
*
* @param remote the remote to push to
- * @param refspecs the refspecs to use for pushing. If none are
- * passed, the configured refspecs will be used
+ * @param refspecs the refspecs to use for pushing. If NULL or an empty
+ * array, the configured refspecs will be used
* @param opts options to use for this push
*/
GIT_EXTERN(int) git_remote_push(git_remote *remote,