fix: fix syntax error for modem offline and sim checking

Author: FUjr

application/qmodem/files/usr/share/qmodem/generic.sh

@@ -359,9 +359,9 @@ get_info()
 
 	#SIM卡信息
     sim_info
-    if [ "$sim_status" != "ready" ] [ -n "$sim_status" ]; then
+    if [ "$sim_status" != "ready" ]; then
         [ -n "$sim_status" ] && add_warning_message_entry "sim_status" "$sim_status" "SIM Error,Error code:" "warning"
-        [ -z "$sim_status" ] && add_warning_message_entry "sim_status" "Modem Offline" "Modem Offline" "warning"
+        [ -z "$sim_status" ] && add_warning_message_entry "sim_status" "" "Modem Offline" "warning"
         return
     fi
 

luci/luci-app-qmodem/po/zh-cn/qmodem.po

@@ -1,4 +1,7 @@
 #controller/qmodem.lua
+msgid "Modem Offline"
+msgstr "模组离线"
+
 msgid "QModem"
 msgstr "QWRT模组管理"
 

luci/luci-app-qmodem/po/zh_Hans/qmodem.po

@@ -1,4 +1,7 @@
 #controller/qmodem.lua
+msgid "Modem Offline"
+msgstr "模组离线"
+
 msgid "QModem"
 msgstr "QWRT模组管理"