[gtk+] Make testsplitheaders more robust

[Matthias Clasen <matthiasc src gnome org>]

commit 0f9f3e8fa284ce73180c7b594d37f724e089a8ce
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 7 12:44:34 2014 -0500

    Make testsplitheaders more robust
    
    Same empty string issue that I fixed in GtkHeaderBar a few days
    ago.

 tests/testsplitheaders.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/tests/testsplitheaders.c b/tests/testsplitheaders.c
index 38ec298..5becbdb 100644
--- a/tests/testsplitheaders.c
+++ b/tests/testsplitheaders.c
@@ -16,8 +16,12 @@ split_decorations (GtkSettings *settings,
 
   p = g_strsplit (layout, ":", -1);
 
-  p1 = g_strconcat (p[0], ":", NULL);
-  p2 = g_strconcat (":", p[1], NULL);
+  p1 = g_strconcat ("", p[0], ":", NULL);
+
+  if (g_strv_length (p) >= 2)
+    p2 = g_strconcat (":", p[1], NULL);
+  else
+    p2 = g_strdup ("");
 
   gtk_header_bar_set_decoration_layout (GTK_HEADER_BAR (sheader), p1);
   gtk_header_bar_set_decoration_layout (GTK_HEADER_BAR (mheader), p2);