Update regression test results, and clean up a Clang -Wall -Wextra warning

Author: hsutter

regression-tests/mixed-ufcs-multiple-template-arguments.cpp2

@@ -19,5 +19,4 @@ main: () -> int = {
 
     x: X = test_string;
     std::cout << x.substr<4,8>() << "\n";
-        // for now this should not be UFCS-ized because of the multiple template arguments
 }

regression-tests/test-results/mixed-function-expression-with-pointer-capture.cpp

@@ -22,7 +22,7 @@
 
     std::string y { "\n" }; 
     std::ranges::for_each( view, [_0 = (&y)](auto const& x){
-        std::cout << (*cpp2::assert_not_null((_0))).c_str() << x << *cpp2::assert_not_null(_0);
+        std::cout << CPP2_UFCS_0(c_str, (*cpp2::assert_not_null((_0)))) << x << *cpp2::assert_not_null(_0);
     } );
 
     auto callback { [](auto& x) { return x += "-ish"; } }; 

regression-tests/test-results/mixed-ufcs-multiple-template-arguments.cpp

@@ -29,6 +29,5 @@ struct X {
 
     X x { test_string }; 
     std::cout << CPP2_UFCS_TEMPLATE_0(substr, (<4,8>), std::move(x)) << "\n";
-        // for now this should not be UFCS-ized because of the multiple template arguments
 }
 

source/parse.h

@@ -1547,7 +1547,7 @@ class parser
                     return {};
                 }
                 n->cap_grp = current_capture_groups.back();
-                n->cap_grp->add({n.get()});
+                n->cap_grp->add(n.get());
             }
 
             auto term = postfix_expression_node::term{&curr()};