Fixed potential crash with uninitialized variables

src/describe.c

@@ -725,7 +725,7 @@ int git_describe_workdir(
 	git_oid current_id;
 	git_status_list *status = NULL;
 	git_status_options status_opts = GIT_STATUS_OPTIONS_INIT;
-	git_describe_result *result;
+	git_describe_result *result = NULL;
 	git_object *commit;
 
 	if ((error = git_reference_name_to_id(&current_id, repo, GIT_HEAD_FILE)) < 0)

src/remote.c

@@ -1691,7 +1691,7 @@ int git_remote_rename(git_strarray *out, git_repository *repo, const char *name,
 {
 	int error;
 	git_vector problem_refspecs = GIT_VECTOR_INIT;
-	git_remote *remote;
+	git_remote *remote = NULL;
 
 	assert(out && repo && name && new_name);