CDRIVER-418 fix bug in C driver example

Author: amidvidy

doc/finding-document.page

@@ -138,11 +138,11 @@ main (int   argc,
 
     client = mongoc_client_new ("mongodb://localhost:27017/");
     collection = mongoc_client_get_collection (client, "test", "test");
-    cursor = mongoc_collection_find (collection, MONGOC_QUERY_NONE, 0, 0, 0, query, NULL, NULL);
-
     query = bson_new ();
     BSON_APPEND_UTF8 (query, "hello", "world");
 
+    cursor = mongoc_collection_find (collection, MONGOC_QUERY_NONE, 0, 0, 0, query, NULL, NULL);
+
     while (mongoc_cursor_next (cursor, &doc)) {
         str = bson_as_json (doc, NULL);
         printf ("%s\n", str);