[Warzone2100-project] [Warzone 2100 Trac] #4212: Fix throttling of dangerThreadFunc.

[Warzone 2. T. <in...@de...>]

#4212: Fix throttling of dangerThreadFunc.
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        Reporter:  NoQ                           |      Owner:
            Type:  patch (an actual patch, not   |     Status:  new
  a request for one)                             |  Milestone:  unspecified
        Priority:  normal                        |    Version:  3.1 and
       Component:  Engine: other                 |  master
Operating System:  All/Non-Specific              |
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 And i always said we have only two threads ...
 Could somebody have a look, just in case?
 I'm not good with threads and sync stuff.

 The semaphore was only supposed to be unlocked every
 `GAME_TICKS_FOR_DANGER` ticks, but time is never saved.

 The extra workload was heavy enough to show up in `perf top`.
 Seems to win around 1.5fps on my machine on a large map.

 Patch for -`bugfixes`.
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Ticket URL: <http://developer.wz2100.net/ticket/4212>
Warzone 2100 Trac <http://developer.wz2100.net/>
The Warzone 2100 Project