Replace tabs with correct space indentation in plistutil.c
Replace tabs with correct space indentation in plistutil.c

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