https://bugs.gentoo.org/834834
From: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
--- a/gattrib/src/gtksheet_2_2.c
+++ b/gattrib/src/gtksheet_2_2.c
@@ -8102,7 +8102,9 @@
     return;
   }
 
-  gtk_sheet_get_cell_area(sheet, row, col, &area);
+  if (!gtk_sheet_get_cell_area(sheet, row, col, &area))
+    return;
+
   child = gtk_sheet_put(sheet, widget, area.x, area.y);
   child->attached_to_cell = TRUE;
   child->row = row;