prevent possible segv in ssl_init_CheckServers if s->addrs is NULL.

for example: <VirtualHost *:>, for which the core only spits out a warning:
 Name or service not known: Cannot resolve host name *: --- ignoring!


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95158 13f79535-47bb-0310-9956-ffa450edef68

modules/ssl/ssl_engine_init.c

@@ -1028,7 +1028,7 @@ void ssl_init_CheckServers(server_rec *base_server, apr_pool_t *p)
     for (s = base_server; s; s = s->next) {
         sc = mySrvConfig(s);
 
-        if (!sc->enabled) {
+        if (!(sc->enabled && s->addrs)) {
             continue;
         }