Some gcc -W... cleanup

libraries/libldap/cldap.c

@@ -109,7 +109,7 @@ cldap_open( char *host, int port )
 		}
 	    }
 
-	    if ( (address = inet_addr( host )) == -1 ) {
+	    if ( (address = inet_addr( host )) == -1UL ) {
 		if ( (hp = gethostbyname( host )) == NULL ) {
 		    errno = EHOSTUNREACH;
 		    continue;

libraries/libldap/os-ip.c

@@ -54,7 +54,7 @@ ldap_connect_to_host( Sockbuf *sb, char *host, unsigned long address,
 
 	connected = use_hp = 0;
 
-	if ( host != NULL && ( address = inet_addr( host )) == -1 ) {
+	if ( host != NULL && ( address = inet_addr( host )) == -1UL ) {
 		if ( (hp = gethostbyname( host )) == NULL ) {
 #ifdef HAVE_WINSOCK
 			errno = WSAGetLastError();