[Commits] [wesnoth/wesnoth] abc64e: Fix crash by reintroduce splice.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/wesnoth/wesnoth
  Commit: abc64e62c865b708e6fde628aaa51f74a03577e0
      https://github.com/wesnoth/wesnoth/commit/abc64e62c865b708e6fde628aaa51f74a03577e0
  Author: Andreas Löf <andreas at alternating.net>
  Date:   2016-07-29 (Fri, 29 Jul 2016)

  Changed paths:
    M src/events.cpp

  Log Message:
  -----------
  Fix crash by reintroduce splice.

This fixes a crash that would be caused by memory incorrectly being freed
when removed from a list. Relying on splice stops that from happening.

This also fixes an exit condition when deleting handlers as depth could
sometimes not be decremented.

Finally, checks are made to made sure that an sdl_handler is either
exclusively in the global context or a different context, ensuring
that they cannot be in both.