c++: fix -Wformat

diff --git a/clients/memcapable.cc b/clients/memcapable.cc
index 3e9bfabfbf2e9b63136353376b7e7b9359cef4d8..af120d0bcd981ffb2c54af724d357fafe68a17f2 100644 (file)
--- a/clients/memcapable.cc
+++ b/clients/memcapable.cc
@@ -2159,7 +2159,7 @@ int main(int argc, char **argv)
   if (sock == INVALID_SOCKET)
   {
     fprintf(stderr, "Failed to connect to <%s:%s>: %s\n",
-            hostname, port, strerror(get_socket_errno()));
+            hostname?:"(null)", port?:"(null)", strerror(get_socket_errno()));
     return EXIT_FAILURE;
   }
 
@@ -2231,7 +2231,7 @@ int main(int argc, char **argv)
       closesocket(sock);
       if ((sock= connect_server(hostname, port)) == INVALID_SOCKET)
       {
-        fprintf(stderr, "Failed to connect to <%s:%s>: %s\n", hostname, port, strerror(get_socket_errno()));
+        fprintf(stderr, "Failed to connect to <%s:%s>: %s\n", hostname?:"(null)", port?:"(null)", strerror(get_socket_errno()));
         fprintf(stderr, "%d of %d tests failed\n", failed, total);
         return EXIT_FAILURE;
       }