[wesnoth-commits] [wesnoth/wesnoth] e82d81: Fix [change_theme] crashing when theme= isn't spec...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/wesnoth/wesnoth
  Commit: e82d811ab09ba2b6933fa3d12c9872f56369db51
      https://github.com/wesnoth/wesnoth/commit/e82d811ab09ba2b6933fa3d12c9872f56369db51
  Author: Iris Morelle <shadowm at wesnoth.org>
  Date:   2018-05-19 (Sat, 19 May 2018)

  Changed paths:
    M changelog.md
    M data/lua/wml-tags.lua

  Log Message:
  -----------
  Fix [change_theme] crashing when theme= isn't specified

Leaving theme= unspecified ought to have the same effect as providing it
and setting it to an empty string. Without the check for a nil value,
however, it would result in a crash like this:

  20180519 22:31:54 error scripting/lua: lua/wml-tags.lua:922: bad argument #3 to '__newindex' (string expected, got nil)
  stack traceback:
    [C]: in metamethod '__newindex'
    lua/wml-tags.lua:922: in local 'cmd'
    lua/wml-utils.lua:145: in field 'handle_event_commands'
    lua/wml-flow.lua:6: in function <lua/wml-flow.lua:5>



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