[vala/0.40] parser: Extend source_reference of parenthesized expr to cover "( ... )"

[Rico Tzschichholz <ricotz src gnome org>]

commit bf3c93b8f6ef87c70387e2e0268afb728d4c091b
Author: Princeton Ferro <princetonferro gmail com>
Date:   Sat Jan 11 22:33:05 2020 -0500

    parser: Extend source_reference of parenthesized expr to cover "( ... )"

 vala/valaparser.vala | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/vala/valaparser.vala b/vala/valaparser.vala
index 8594c1c95..507464566 100644
--- a/vala/valaparser.vala
+++ b/vala/valaparser.vala
@@ -725,8 +725,11 @@ public class Vala.Parser : CodeVisitor {
                                tuple.add_expression (expr);
                        }
                        return tuple;
+               } else {
+                       var expr = expr_list.get (0);
+                       expr.source_reference = get_src (begin);
+                       return expr;
                }
-               return expr_list.get (0);
        }
 
        Expression parse_template () throws ParseError {