Some old stil (SBL) messages might include 'address' before 'network'?

Attempt to address error reported by Manitoo in IRC:
JavaScript sbbslist.js line 327: TypeError: bbs.network[network] is undefined

Normally, the "address:" key would always follow a "network:" key, but maybe
there's a corrupted message or the sysop is trying to import from the wrong
message base (not syncdata?).

exec/sbbslist.js

@@ -324,7 +324,8 @@ function import_entry(name, text)
                 bbs.network[network] = {name: match[2]};
                 break;
             case 'address':
-                bbs.network[network].address = match[2];
+				if(bbs.network[network] !== undefined)
+					bbs.network[network].address = match[2];
                 break;
             case 'terminal':
                 if(bbs.terminal.types.length)