cgen: fix lost return in ComptimeCall (fixes #14962) (#14995)

Author: shove70

vlib/v/gen/c/cgen.v

@@ -4052,7 +4052,7 @@ fn (mut g Gen) return_stmt(node ast.Return) {
 
 	if node.exprs.len > 0 {
 		// skip `return $vweb.html()`
-		if node.exprs[0] is ast.ComptimeCall {
+		if node.exprs[0] is ast.ComptimeCall && (node.exprs[0] as ast.ComptimeCall).is_vweb {
 			g.expr(node.exprs[0])
 			g.writeln(';')
 			return

vlib/v/tests/return_comptime_call.v

@@ -0,0 +1,25 @@
+struct App {}
+
+fn (mut app App) method_one() string {
+	return '1'
+}
+
+fn (mut app App) method_two() string {
+	return '2'
+}
+
+fn reflect_call(method_name string) string {
+	a := App{}
+	$for method in App.methods {
+		if method.name == method_name {
+			return a.$method()
+		}
+	}
+	panic('Method not supported: $method_name')
+}
+
+fn main() {
+	result := reflect_call('method_one')
+	println(result)
+	assert result == '1'
+}