[gtk/constraint-guide-3] solver: Fix a copy/paste error

[Matthias Clasen <matthiasc src gnome org>]

commit 47e874ae5d289d9bcaa1c0e824b143aa796ca9b7
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jun 28 15:51:37 2019 -0400

    solver: Fix a copy/paste error

 gtk/gtkconstraintsolver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkconstraintsolver.c b/gtk/gtkconstraintsolver.c
index e29c7665fc..b1ac6d4dee 100644
--- a/gtk/gtkconstraintsolver.c
+++ b/gtk/gtkconstraintsolver.c
@@ -1736,7 +1736,7 @@ gtk_constraint_solver_remove_edit_variable (GtkConstraintSolver *self,
     {
       char *str = gtk_constraint_variable_to_string (variable);
 
-      g_critical ("Unknown stay variable '%s'", str);
+      g_critical ("Unknown edit variable '%s'", str);
 
       g_free (str);