fix log display in UI

Merge pull request #80 from Roddy-D/main

sing-box.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
 args=$@
-is_sh_ver=v1.12
+is_sh_ver=v1.13
 
 . /etc/sing-box/sh/src/init.sh

src/core.sh

@@ -1536,7 +1536,8 @@ is_main_menu() {
             _try_enable_bbr
             ;;
         2)
-            get log
+            load log.sh
+            log_set
             ;;
         3)
             get test-run