Crash on changelevel during the particles reset

Calling delete particle changes the _particles vector (due to how the CMiniMem::Deallocate is implemented) thus invalidating the loop iterator.

halflife-updated/cl_dll/particleman/CMiniMem.cpp

Lines 213 to 217 in d2da2f1

    
           for (auto particle : _particles) 
        
           { 
        
           	particle->Die(); 
        
           	delete particle; 
        
           }

To reproduce create some particles and change map while particles still exist.

	for (auto particle : _particles)
	{
	particle->Die();
	delete particle;
	}