Don't override ai_flags with hints.ai_flags

--- a/src/afindep.c

+++ b/src/afindep.c

@@ -154,7 +154,8 @@

 			src_hints.ai_flags    = AI_PASSIVE;

 			src_hints.ai_socktype = ptr->ai_socktype;

 			src_hints.ai_protocol = ptr->ai_protocol;

-			src_hints.ai_flags    = hints->ai_flags;

+			/* Don't override previous ai_flags */

+			src_hints.ai_flags    |= hints->ai_flags;

 			/* get the local IP address of the connection */

 			err = getaddrinfo(local_address, local_service,