Tidy up name buffer use in report_addresses().

Buffer may need to be twice MAXDNAME is escaping is
enabled in extract_name. The name may include weird characters.

src/dnsmasq.c

@@ -135,6 +135,13 @@ int main (int argc, char **argv)
     }
 #endif
 
+#if defined(HAVE_CONNTRACK) && defined(HAVE_UBUS)
+  /* CONNTRACK UBUS code uses this buffer, so if not allocated above,
+     we need to allocate it here. */
+  if (option_bool(OPT_CMARK_ALST_EN) && !daemon->workspacename)
+    daemon->workspacename = safe_malloc(MAXDNAME);
+#endif
+  
 #ifdef HAVE_DHCP
   if (!daemon->lease_file)
     {