[template-glib] expr-parser.y: allow creating functions without a name

[Christian Hergert <chergert src gnome org>]

commit b8247680f02f4bb4a04a0782a2207f9d0f7af530
Author: Christian Hergert <chergert redhat com>
Date:   Wed May 4 17:45:41 2022 -0700

    expr-parser.y: allow creating functions without a name
    
    This allows creating a new function which does not have a name even though
    we can't call them yet.

 src/tmpl-expr-parser.y | 6 ++++++
 src/tmpl-expr.c        | 2 --
 2 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/src/tmpl-expr-parser.y b/src/tmpl-expr-parser.y
index f3b2a58..d8f47af 100644
--- a/src/tmpl-expr-parser.y
+++ b/src/tmpl-expr-parser.y
@@ -300,6 +300,12 @@ exp: exp CMP exp {
     g_free ($2);
     g_free ($4);
   }
+  | FUNC '(' ')' stmt {
+    $$ = create_function (NULL, NULL, $4);
+  }
+  | FUNC '(' symlist ')' stmt {
+    $$ = create_function (NULL, $3, $5);
+  }
 ;
 
 explist: exp
diff --git a/src/tmpl-expr.c b/src/tmpl-expr.c
index 25def26..d5a1422 100644
--- a/src/tmpl-expr.c
+++ b/src/tmpl-expr.c
@@ -401,8 +401,6 @@ tmpl_expr_new_func (char      *name,
 {
   TmplExprFunc *ret;
 
-  g_return_val_if_fail (name != NULL, NULL);
-
   if (list == NULL)
     list = tmpl_expr_new_nop ();