markused: skip panic_result_not_set (generated for fn main(){ foo()! }) too

vlib/v/markused/markused.v

@@ -244,6 +244,7 @@ pub fn mark_used(mut table ast.Table, pref &pref.Preferences, ast_files []&ast.F
 		all_fn_root_names << 'panic_debug'
 	}
 	all_fn_root_names << 'panic_optional_not_set'
+	all_fn_root_names << 'panic_result_not_set'
 	if pref.is_test {
 		all_fn_root_names << 'main.cb_assertion_ok'
 		all_fn_root_names << 'main.cb_assertion_failed'

vlib/v/tests/skip_unused/shorthands_for_optionals_and_results_in_main.run.out

@@ -0,0 +1,2 @@
+42
+42

vlib/v/tests/skip_unused/shorthands_for_optionals_and_results_in_main.skip_unused.run.out

@@ -0,0 +1,2 @@
+42
+42

vlib/v/tests/skip_unused/shorthands_for_optionals_and_results_in_main.vv

@@ -0,0 +1,14 @@
+fn opt() ?int {
+	return 42
+}
+
+fn result() !int {
+	return 42
+}
+
+fn main() {
+	o := opt()?
+	r := result()!
+	println(o)
+	println(r)
+}