[pango/wip/baedert/for-master] break_attrs: Bail out if we have no ALLOW_BREAKS attributes

[Timm Bäder <baedert src gnome org>]

commit dcfb8ba0dd562b7be71879b4cf7e3295251a50d9
Author: Timm Bäder <mail baedert org>
Date:   Fri Apr 17 08:22:04 2020 +0200

    break_attrs: Bail out if we have no ALLOW_BREAKS attributes

 pango/break.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/pango/break.c b/pango/break.c
index 5af260f8..501cadf3 100644
--- a/pango/break.c
+++ b/pango/break.c
@@ -1928,6 +1928,12 @@ break_attrs (const char   *text,
         pango_attr_list_insert (&list, pango_attribute_copy (attr));
     }
 
+  if (!_pango_attr_list_has_attributes (&list))
+    {
+      _pango_attr_list_destroy (&list);
+      return FALSE;
+    }
+
   _pango_attr_list_get_iterator (&list, &iter);
   do {
     PangoAttribute *attr;