The musl implementation of getaddrinfo and getservbyname does not
aliases. As a workaround we use "sunprc" instead of "portmapper"

ported from alpine linux

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Index: rpcbind-0.2.2/src/rpcbind.c
===================================================================
--- rpcbind-0.2.2.orig/src/rpcbind.c
+++ rpcbind-0.2.2/src/rpcbind.c
@@ -491,7 +491,7 @@ init_transport(struct netconfig *nconf)
 			if ((aicode = getaddrinfo(hosts[nhostsbak],
 			    servname, &hints, &res)) != 0) {
 			  if ((aicode = getaddrinfo(hosts[nhostsbak],
-						    "portmapper", &hints, &res)) != 0) {
+						    "sunrpc", &hints, &res)) != 0) {
 				syslog(LOG_ERR,
 				    "cannot get local address for %s: %s",
 				    nconf->nc_netid, gai_strerror(aicode));
@@ -564,7 +564,7 @@ init_transport(struct netconfig *nconf)
 		if ((strcmp(nconf->nc_netid, "local") != 0) &&
 		    (strcmp(nconf->nc_netid, "unix") != 0)) {
 			if ((aicode = getaddrinfo(NULL, servname, &hints, &res))!= 0) {
-			  if ((aicode = getaddrinfo(NULL, "portmapper", &hints, &res))!= 0) {
+			  if ((aicode = getaddrinfo(NULL, "sunrpc", &hints, &res))!= 0) {
 			  printf("cannot get local address for %s: %s",  nconf->nc_netid, gai_strerror(aicode));
 			  syslog(LOG_ERR,
 				    "cannot get local address for %s: %s",