fix(sd2dserver): correct code style

lgsm/functions/info_config.sh

@@ -921,7 +921,7 @@ fn_info_config_sdtd(){
 		servername=$(grep "ServerName" "${servercfgfullpath}" | sed 's/^.*value="//' | cut -f1 -d"\"")
 		serverpassword=$(grep "ServerPassword" "${servercfgfullpath}" | sed 's/^.*value="//' | cut -f1 -d"\"")
 		port=$(grep "ServerPort" "${servercfgfullpath}" | tr -cd '[:digit:]')
-		queryport=$port
+		queryport=${port:-"0"}
 
 		webadminenabled=$(grep "ControlPanelEnabled" "${servercfgfullpath}" | sed 's/^.*value="//' | cut -f1 -d"\"")
 		webadminport=$(grep "ControlPanelPort" "${servercfgfullpath}" | tr -cd '[:digit:]')