[gtksourceview/gtksourceview-5-4] snippets: avoid empty strings for snippets

[Christian Hergert <chergert src gnome org>]

commit 924eb28b71e934fca31db6ef834cd583c3d43f06
Author: Christian Hergert <chergert redhat com>
Date:   Wed Apr 27 11:46:21 2022 -0700

    snippets: avoid empty strings for snippets

 gtksourceview/gtksourcesnippetbundle.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/gtksourceview/gtksourcesnippetbundle.c b/gtksourceview/gtksourcesnippetbundle.c
index f896b558..478f6e6e 100644
--- a/gtksourceview/gtksourcesnippetbundle.c
+++ b/gtksourceview/gtksourcesnippetbundle.c
@@ -255,9 +255,15 @@ elements_end_element (GMarkupParseContext  *context,
 
                        for (guint i = 0; state->languages[i]; i++)
                        {
-                               info.language = _gtk_source_snippet_manager_intern (state->manager, 
state->languages[i]);
+                               char *stripped = g_strstrip (g_strdup (state->languages[i]));
 
-                               gtk_source_snippet_bundle_add (state->self, &info);
+                               if (stripped != NULL && stripped[0] != 0)
+                               {
+                                       info.language = _gtk_source_snippet_manager_intern (state->manager, 
stripped);
+                                       gtk_source_snippet_bundle_add (state->self, &info);
+                               }
+
+                               g_free (stripped);
                        }
 
                }