Fixed a mistake where when saving the state of the SXROM mapper several pointers that weren't consistent between instantiations of the emulator where being saved and restored, causing a segfault.
Fixed a mistake where when saving the state of the SXROM mapper several pointers that weren't consistent between instantiations of the emulator where being saved and restored, causing a segfault.

DalePutnam/D-NES,DalePutnam/D-NES