Fix init handler signature for FUSE 3

FUSE 3 init handler requires struct fuse_config* parameter.
This parameter provides access to high-level API configuration
options that can be modified during initialization.

Without this parameter, the init handler signature is incompatible
with FUSE 3, causing filesystem operations to fail.

pclsync/pfs.c

@@ -3313,7 +3313,7 @@ static void pfs_start_callback_timer(psync_timer_t timer, void *ptr) {
     prun_thread("fs start callback", callback);
 }
 
-static void *pfs_init(struct fuse_conn_info *conn) {
+static void *pfs_init(struct fuse_conn_info *conn, struct fuse_config *cfg) {
 #if defined(FUSE_CAP_ASYNC_READ)
   conn->want |= FUSE_CAP_ASYNC_READ;
 #endif