Fix memory leak
diff --git a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
index 0ebea43..4373459 100644
--- a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
+++ b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
@@ -125,6 +125,8 @@
   GPR_ASSERT(grpc_call_set_credentials(c, creds) != GRPC_CALL_OK);
   grpc_credentials_release(creds);
 
+  grpc_call_destroy(c);
+
   end_test(&f);
   config.tear_down_data(&f);
 }