usbmuxd_get_result: allow getting the plist result for newer usbmuxd commands
usbmuxd_get_result: allow getting the plist result for newer usbmuxd commands

libimobiledevice-win32/libusbmuxd,wangwei1237/libusbmuxd,wangwei1237/libusbmuxd,aburgh/libusbmuxd,libimobiledevice-win32/libusbmuxd,libimobiledevice/libusbmuxd,libimobiledevice/libusbmuxd,fishjam/libusbmuxd,aburgh/libusbmuxd,fishjam/libusbmuxd