base64: Prevent buffer overflow by not decoding blocks with less than 4 chars
base64: Prevent buffer overflow by not decoding blocks with less than 4 chars

libimobiledevice-win32/libplist,libimobiledevice/libplist,Tatsh/libplist,libimobiledevice-win32/libplist,Tatsh/libplist,libimobiledevice/libplist,libimobiledevice-win32/libplist,Tatsh/libplist,Tatsh/libplist,libimobiledevice/libplist,libimobiledevice-win32/libplist