bc2c3b Revert catching c++ exceptions (triggered on situations when it should been silent), avoid crash of uninitialized GL and fix lockup when mainwindow doesn't exist

Authored and Committed by justburner 2 years ago
    Revert catching c++ exceptions (triggered on situations when it should been silent), avoid crash of uninitialized GL and fix lockup when mainwindow doesn't exist
    
        
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