transport.c: moving total_num check from #476 (#478)
transport.c: moving total_num check from #476 (#478)

file: transport.c

notes:
moving total_num zero length check from #476 up to the prior bounds check which already includes a total_num check. Makes it slightly more readable.

credit:
Will Cosgrove
libssh2/libssh2,libssh2/libssh2,libssh2/libssh2,libssh2/libssh2