fix a warning and some screwy error reporting

Author: hanumantmk

examples/example-scram.c

@@ -34,6 +34,7 @@ main (int   argc,
       authuristr = "mongodb://user,=:[email protected]/test?authMechanism=MONGODB-CR";
    } else {
       printf("%s - [implicit|scram|cr]\n", argv[0]);
+      return 1;
    }
 
    mongoc_init ();

src/mongoc/mongoc-cluster.c

@@ -877,7 +877,7 @@ _mongoc_cluster_preselect (mongoc_cluster_t             *cluster,       /* IN */
    while (!(node = _mongoc_cluster_select (cluster, &rpc, 1, 0, write_concern,
                                            read_prefs, &scoped_error))) {
       if ((retry_count++ == MAX_RETRY_COUNT) ||
-          !_mongoc_cluster_reconnect (cluster, error)) {
+          !_mongoc_cluster_reconnect (cluster, &scoped_error)) {
          break;
       }
    }