sgsnemu: Replace use of deprecated libgtp API pdp_newpdp with new one

Related: OS#2873
Change-Id: I9742b82c382ae2e63f8aff4c5c32e2450059082b

sgsnemu/sgsnemu.c

@@ -1614,7 +1614,7 @@ int main(int argc, char **argv)
 		/* Allocated here. */
 		/* If create context failes we have to deallocate ourselves. */
 		/* Otherwise it is deallocated by gtplib */
-		pdp_newpdp(&pdp, myimsi, options.nsapi, NULL);
+		gtp_pdp_newpdp(gsn, &pdp, myimsi, options.nsapi, NULL);
 
 		pdp->peer[0] = &iparr[n]; /* FIXME: support v4v6, have 2 peers */
 		pdp->ipif = tun;	/* TODO */