[gtk+] Revert "testsuite/gtk/textiter: Remove an unused variable"

[Daniel Boles <dboles src gnome org>]

commit 75b0431dcff9f8b49f9f9c45f9eb84f2d1e43375
Author: Daniel Boles <dboles src gnome org>
Date:   Sat Feb 18 20:20:21 2017 +0000

    Revert "testsuite/gtk/textiter: Remove an unused variable"
    
    This reverts commit 8bddf52b510457f73e2ab70049e63d2f6125f456.

 testsuite/gtk/textiter.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/testsuite/gtk/textiter.c b/testsuite/gtk/textiter.c
index 6259f88..c68220c 100644
--- a/testsuite/gtk/textiter.c
+++ b/testsuite/gtk/textiter.c
@@ -748,6 +748,7 @@ test_backward_line (void)
 {
   GtkTextBuffer *buffer;
   GtkTextIter iter, start, end;
+  gboolean ret;
   gint offset;
 
   buffer = gtk_text_buffer_new (NULL);