SpriteSample is crashing on launch

[pradipd]

SpriteSample is crashing on launch for all configurations (arm/win32 debug/release).

[jaredhms]

This is a double-free that's hit when we drain the autoreleasepool upon initial app launch. It appears to have been introduced by #1710; reverting commit deb99af fixes the crash.

Here's a stack that's causing a double-free:

GLKIT.DLL!+[GLKTextureLoader textureWithContentsOfFile:options:error:](objc_class * self, objc_selector * _cmd, NSString * fname, NSDictionary * opts, NSError * * err) Line 282 Objective-C++
SpriteSample.exe!-[SpriteClass initWithFile:effect:](SpriteClass * self, objc_selector * _cmd, NSString *) Line 44 Objective-C
SpriteSample.exe!-[Renderer initGLData:](Renderer * const self, objc_selector * _cmd, CGSize screenSize) Line 47 Objective-C
SpriteSample.exe!-[AppDelegate application:didFinishLaunchingWithOptions:](AppDelegate * const self, objc_selector * _cmd, id *) Line 57 Objective-C
UIKIT.DLL!UIApplicationMainInit(NSString * principalClassName, NSString * delegateClassName, unsigned int defaultOrientation, int activationType, objc_object * activationArg) Line 283 Objective-C++
UIKIT.DLL!ApplicationMainStart(const char * principalName, const char * delegateName, float windowWidth, float windowHeight, ActivationType activationType, IInspectable * activationArg) Line 158 Objective-C++
UIKIT.DLL!RunApplicationMain(Platform::String ^) Line 68 C++
UIKIT.DLL!DoApplicationLaunch(ActivationType activationType, Platform::Object ^ activationArg) Line 290 C++
UIKIT.DLL!_ApplicationLaunch(ActivationType activationType, Platform::Object ^ activationArg) Line 306 C++
UIKIT.DLL!UIApplicationLaunched(Windows::ApplicationModel::Activation::LaunchActivatedEventArgs ^ args) Line 192 C++