[fix] : Fixed module airootfs

Author: Hayao0819

build.sh

@@ -603,7 +603,7 @@ make_customize_airootfs() {
     local _airootfs _airootfs_script_options _script _script_list _airootfs_list=() _main_script
 
     for_module '_airootfs_list+=("${module_dir}/{}/airootfs.any" "${module_dir}/{}/airootfs.${arch}")'
-    _airootfs_list=("${channel_dir}/airootfs.any" "${channel_dir}/airootfs.${arch}")
+    _airootfs_list+=("${channel_dir}/airootfs.any" "${channel_dir}/airootfs.${arch}")
 
     for _airootfs in "${_airootfs_list[@]}";do
         if [[ -d "${_airootfs}" ]]; then