[gtk/gtk-3-24: 1/2] demos/gtk-demo/combobox: fix typo

[Timm Bäder <baedert src gnome org>]

commit f535443da6721fb1e77d2ffae8a2439bc2dad524
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sun Dec 9 23:25:02 2018 -0500

    demos/gtk-demo/combobox: fix typo
    
    Fix typo that prevented the P-S submenu from displaying correctly
    
    (cherry picked from commit 462193ae26fe0474808ab95e9ceac5158aba59e1)

 demos/gtk-demo/combobox.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/gtk-demo/combobox.c b/demos/gtk-demo/combobox.c
index 7044c8fb19..9b2b4a6dce 100644
--- a/demos/gtk-demo/combobox.c
+++ b/demos/gtk-demo/combobox.c
@@ -144,7 +144,7 @@ create_capital_store (void)
     { NULL, "Jackson" },
     { NULL, "Jefferson City" },
     { NULL, "Juneau" },
-    { "K - O" },
+    { "K - O", NULL },
     { NULL, "Lansing" },
     { NULL, "Lincoln" },
     { NULL, "Little Rock" },
@@ -154,7 +154,7 @@ create_capital_store (void)
     { NULL, "Nashville" },
     { NULL, "Oklahoma City" },
     { NULL, "Olympia" },
-    { NULL, "P - S" },
+    { "P - S", NULL },
     { NULL, "Phoenix" },
     { NULL, "Pierre" },
     { NULL, "Providence" },