remove more global references (#7442)

app/command_code_test.go

@@ -18,7 +18,7 @@ func TestCodeProviderDoCommand(t *testing.T) {
 		"foo\nbar":   "    foo\n    bar",
 		"foo\nbar\n": "    foo\n    bar\n    ",
 	} {
-		actual := cp.DoCommand(args, msg).Text
+		actual := cp.DoCommand(nil, args, msg).Text
 		if actual != expected {
 			t.Errorf("expected `%v`, got `%v`", expected, actual)
 		}