[gnumeric] Introspection: doc fix.

[Morten Welinder <mortenw src gnome org>]

commit 78e68bd52502f727d30aebdd30e4c759165da2e7
Author: Morten Welinder <terra gnome org>
Date:   Tue Jul 2 13:23:05 2013 -0400

    Introspection: doc fix.

 src/expr.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/expr.c b/src/expr.c
index a3def77..fe5d5b6 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -2770,6 +2770,12 @@ gnm_expr_list_unref (GnmExprList *list)
        gnm_expr_list_free (list);
 }
 
+/**
+ * gnm_expr_list_copy:
+ * @list: list of expressions
+ *
+ * Returns: (transfer full): a copy of the list.
+ */
 GnmExprList *
 gnm_expr_list_copy (GnmExprList *list)
 {