mailbox.lua:5: attempt to call method 'match' (a nil value)

[verymilan]

Hi there, a player cannot access their mailbox right now because it's crashing the server. I assume it is quite similar to #36 :)

ServerError: AsyncErr: ServerThread::run Lua: Runtime error from mod 'default' in callback item_OnPlace(): 
...h/bin/../games/minetest_game/mods/xdecor/src/mailbox.lua:5: 
attempt to call method 'match' (a nil value)
stack traceback:
      ...h/bin/../games/minetest_game/mods/xdecor/src/mailbox.lua:5: in function 'get_img'
      ...h/bin/../games/minetest_game/mods/xdecor/src/mailbox.lua:14: in function 'img_col'
      ...h/bin/../games/minetest_game/mods/xdecor/src/mailbox.lua:48: in function 'formspec'
      ...h/bin/../games/minetest_game/mods/xdecor/src/mailbox.lua:100: in function 'on_rightclick'
      bin/../builtin/game/item.lua:423: in function <bin/../builtin/game/item.lua:416>

Regards!

[kilbith]

Fixed.