[gnome-terminal] search: Fix "Match case" to always take effect immediately

[Egmont Koblinger <egmontkob src gnome org>]

commit d7a5f53332fbba3bd2397589afc40e000aab3081
Author: Egmont Koblinger <egmont gmail com>
Date:   Sat Jun 16 23:28:47 2018 +0200

    search: Fix "Match case" to always take effect immediately
    
    https://gitlab.gnome.org/GNOME/gnome-terminal/issues/4

 src/terminal-search-popover.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/terminal-search-popover.c b/src/terminal-search-popover.c
index 81979b21..8d814cf4 100644
--- a/src/terminal-search-popover.c
+++ b/src/terminal-search-popover.c
@@ -310,6 +310,8 @@ update_regex (TerminalSearchPopover *popover)
     priv->regex = NULL;
   }
 
+  priv->regex_caseless = caseless;
+
   update_sensitivity (popover);
 
   g_object_notify_by_pspec (G_OBJECT (popover), pspecs[PROP_REGEX]);
@@ -350,7 +352,7 @@ terminal_search_popover_init (TerminalSearchPopover *popover)
   GtkWidget *widget = GTK_WIDGET (popover);
 
   priv->regex_pattern = 0;
-  priv->regex_caseless = FALSE;
+  priv->regex_caseless = TRUE;
 
   gtk_widget_init_template (widget);