fix grammar in a log message

svn:r17131

src/or/dns.c

@@ -1424,9 +1424,10 @@ evdns_wildcard_check_callback(int result, char type, int count, int ttl,
     log(dns_wildcard_one_notice_given ? LOG_INFO : LOG_NOTICE, LD_EXIT,
         "Your DNS provider gave an answer for \"%s\", which "
         "is not supposed to exist.  Apparently they are hijacking "
-        "DNS failures. Trying to correct for this.  We've noticed %d possibly "
-        "bad addresses so far.",
-        string_address, strmap_size(dns_wildcard_response_count));
+        "DNS failures. Trying to correct for this.  We've noticed %d "
+        "possibly bad address%s so far.",
+        string_address, strmap_size(dns_wildcard_response_count),
+        (strmap_size(dns_wildcard_response_count) == 1) ? "" : "es");
     dns_wildcard_one_notice_given = 1;
   }
   tor_free(arg);