git_remote_rename: propogate GIT_ENOTFOUND

src/remote.c

@@ -1677,7 +1677,7 @@ int git_remote_rename(git_strarray *out, git_repository *repo, const char *name,
 	assert(out && repo && name && new_name);
 
 	if ((error = git_remote_load(&remote, repo, name)) < 0)
-		return -1;
+		return error;
 
 	if ((error = ensure_remote_name_is_valid(new_name)) < 0)
 		goto cleanup;

tests/network/remote/rename.c

@@ -200,6 +200,15 @@ void test_network_remote_rename__overwrite_ref_in_target(void)
 	git_branch_iterator_free(iter);
 }
 
+void test_network_remote_rename__nonexistent_returns_enotfound(void)
+{
+	git_strarray problems = {0};
+
+	int err = git_remote_rename(&problems, _repo, "nonexistent", "renamed");
+
+	cl_assert_equal_i(GIT_ENOTFOUND, err);
+}
+
 void test_network_remote_rename__symref_head(void)
 {
 	int error;