Put errors ganerating code behind FAKE_CODE macro, which is not defined by default in any build.

server/core/gateway.c

@@ -1025,7 +1025,7 @@ int main(int argc, char **argv)
 
 	progname = *argv;
 
-#if defined(SS_DEBUG)
+#if defined(FAKE_CODE)
         memset(conn_open, 0, sizeof(bool)*10240);
         memset(dcb_fake_write_errno, 0, sizeof(unsigned char)*10240);
         memset(dcb_fake_write_ev, 0, sizeof(__int32_t)*10240);
@@ -1033,7 +1033,7 @@ int main(int argc, char **argv)
         fail_next_client_fd = false;
         fail_next_accept = 0;
         fail_accept_errno = 0;
-#endif
+#endif /* FAKE_CODE */
         file_write_header(stderr);
         /*<
          * Register functions which are called at exit except libmysqld-related,