[libhandy/tabs: 7/62] Stop using g_list_store_find()

[Alexander Mikhaylenko <alexm src gnome org>]

commit 366a6882a6c62c6d55bf021038585c88b6ec0864
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Sep 3 22:20:14 2020 +0500

    Stop using g_list_store_find()
    
    Apparently that's too new for Debian

 src/hdy-tab-view.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/src/hdy-tab-view.c b/src/hdy-tab-view.c
index 34ba182e..80cac047 100644
--- a/src/hdy-tab-view.c
+++ b/src/hdy-tab-view.c
@@ -1989,14 +1989,19 @@ guint
 hdy_tab_view_get_page_position (HdyTabView *self,
                                 HdyTabPage *page)
 {
-  guint pos;
+  guint i;
 
   g_return_val_if_fail (HDY_IS_TAB_VIEW (self), 0);
   g_return_val_if_fail (HDY_IS_TAB_PAGE (page), 0);
 
-  g_return_val_if_fail (g_list_store_find (self->pages, page, &pos), 0);
+  for (i = 0; i < self->n_pages; i++) {
+    HdyTabPage *p = hdy_tab_view_get_nth_page (self, i);
+
+    if (page == p)
+      return i;
+  }
 
-  return pos;
+  return 0;
 }
 
 /**