Fix error in SysTimeClass::Get

[xezon]

• Split off of Fixed bugs and memleaks #796

This claims to be a fix for a Thyme specific issue.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (549c535) 2.53% compared to head (ddd4fe0) 2.54%.

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Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1105   +/-   ##
========================================
  Coverage     2.53%    2.54%           
========================================
  Files          949      949           
  Lines       110299   110299           
  Branches     18881    18881           
========================================
+ Hits          2800     2802    +2     
+ Misses      107095   107094    -1     
+ Partials       404      403    -1     

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[tomsons26]

This seems was

int SysTimeClass::Get()
{
#ifdef GAME_DLL
#define _is_init (Make_Global<bool>(0x00A66B30))
#else
    static bool _is_init;
#endif
    if (!_is_init) {
        Reset();
        _is_init = true;
    }

    unsigned time = rts::Get_Time();

    if (time > m_startTime) {
        return time - m_startTime;
    }
    return time + m_negTime;
}

[xezon]

Fixed.