Merge pull request libgit2#2899 from libgit2/jamill/rebase_opt_ver_check

Check rebase options version on public entry points

Author: ethomson

src/rebase.c

@@ -634,7 +634,7 @@ int git_rebase_init(
 
 	*out = NULL;
 
-	GITERR_CHECK_VERSION(given_opts, GIT_MERGE_OPTIONS_VERSION, "git_merge_options");
+	GITERR_CHECK_VERSION(given_opts, GIT_REBASE_OPTIONS_VERSION, "git_rebase_options");
 
 	if (!onto)
 		onto = upstream;
@@ -1058,6 +1058,8 @@ int git_rebase_finish(
 
 	assert(rebase);
 
+	GITERR_CHECK_VERSION(given_opts, GIT_REBASE_OPTIONS_VERSION, "git_rebase_options");
+
 	if ((error = rebase_normalize_opts(rebase->repo, &opts, given_opts)) < 0)
 		goto done;