Fix crash when converting plists containing comments
Fix crash when converting plists containing comments

Thanks to free2000fly for pointing this out. The issue was that
XML plists with comments converted to binary plists would result
in invalid binary nodes, thus converting back these binary plists
resulted in a crash.

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