Temporary fix for the Launch Crash of OpenEmu on Mac OS X 10.14 Mojave (Beta 5)

OpenEmu_Crash_OSXMojave_Fix.m

/*
Hi to all, I was testing openEmu in Mac OS X Mojave (Dev Beta 5), and did crash
immediately, then following the crash report:

Dyld Error Message:
  Symbol not found: _OBJC_CLASS_$_IKCGRenderer
  Referenced from: /Applications/OpenEmu.app/Contents/MacOS/OpenEmu
  Expected in: /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Versions/A/ImageKit
 in /Applications/OpenEmu.app/Contents/MacOS/OpenEmu
 
I investigated further in the source code and fixed the issue, now OpenEmu
starts and works kinda ok. The problem is within this Category implementation:
File: OEGridView.m 
*/

@implementation IKCGRenderer (ScaleFactorAdditions)

- (unsigned long long)scaleFactor {
    return self->_currentScaleFactor ?: 1.0;
}
@end

// The problem is that the Category in the interface is not declared, its only
// declared as conform to IKRendered protocol, where is (ScaleFactorAdditions) ? :
// File: IKRenderer.h

@interface IKCGRenderer : NSObject <IKRenderer> {
    struct CGContext *_ctx;
    float _currentAlpha;
    BOOL _smoothFonts;
    unsigned long long _currentScaleFactor;
}

// I just deleted the Category part in the IKCGRenderer implementation & compiled
// it with XCode 10 (Beta) now the App dosen`t crash on startup and works, but with
// some glitches in the rendering of the games artbox tiles. Nevertheless if you
// resize the window or select another game console library the problem is gone.

// This is the "fixed" implementation:

@implementation IKCGRenderer /*(ScaleFactorAdditions)*/

- (unsigned long long)scaleFactor {
    return self->_currentScaleFactor ?: 1.0;
}
@end


/*
I don't know from where the "scaleFactor" method is called, I looked for it by
putting an NSLog(@"_currentScaleFactor %qi\n", _currentScaleFactor) inside the
method body, but nothings is logged in the runtime. I hope this info is useful,
thanks.

Mario Gajardo Tassara
[email protected]
https://www.mariogt.com
*/