While qemuProcessIncomingDefNew takes an fd argument and stores it in
qemuProcessIncomingDef structure, the caller is still responsible for
closing the file descriptor.

Introduced by commit v1.2.21-140-ge7c6f457.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>