Fix to MXS-417: https://mariadb.atlassian.net/browse/MXS-417 Added support for single-character wildcard in IP addresses.

Single character wildcard addresses are now properly handled

server/include/dbusers.h

@@ -62,6 +62,7 @@ typedef struct mysql_user_host_key {
         struct sockaddr_in ipv4;
         int netmask;
 	char *resource;
+    char hostname[MYSQL_HOST_MAXLEN + 1];
 } MYSQL_USER_HOST;
 
 extern int load_mysql_users(SERVICE *service);