64-bit build broken on ~master

[growlercab]

I'm on Arch x86-64 using dub 0.9.23 and encountered the error below trying to build Dgame after a dub upgrade:

Building dgame ~master configuration "lib", build type debug.
Running dmd...

../../../.dub/packages/dgame-master/source/Dgame/Graphic/Texture.d(314): Error: cannot implicitly convert expression (this.getByteSize()) of type ulong to immutable(uint)

FAIL ../../../.dub/packages/dgame-master/.dub/build/lib-debug-linux.posix-x86_64-dmd_2067-A10EA19733943F1D00C910E56DC7F2DC/ Dgame staticLibrary

Error executing command build:
dmd failed with exit code 1.

[Dgame]

Fixed. Nasty little things... :)