[gimp] app: fix tests for new show-tabs option

[Ell <ell src gnome org>]

commit 4113aaad6949ea003b7340653d03ca173260af83
Author: Ell <ell_se yahoo com>
Date:   Sat Oct 27 05:40:33 2018 -0400

    app: fix tests for new show-tabs option
    
    In app/tests, add the show-tabs pref, added in commit
    1ca2d744111f53dae8f7311833aa2ea646c555a1, to the expected sessionrc
    files.

 app/tests/gimpdir/sessionrc-expected-multi-window  | 1 +
 app/tests/gimpdir/sessionrc-expected-single-window | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/app/tests/gimpdir/sessionrc-expected-multi-window 
b/app/tests/gimpdir/sessionrc-expected-multi-window
index cff24c0b90..a7514b8d15 100644
--- a/app/tests/gimpdir/sessionrc-expected-multi-window
+++ b/app/tests/gimpdir/sessionrc-expected-multi-window
@@ -115,6 +115,7 @@
 
 (hide-docks no)
 (single-window-mode no)
+(show-tabs yes)
 (tabs-position 0)
 (last-tip-shown 0)
 
diff --git a/app/tests/gimpdir/sessionrc-expected-single-window 
b/app/tests/gimpdir/sessionrc-expected-single-window
index 26e4574144..f91b224b35 100644
--- a/app/tests/gimpdir/sessionrc-expected-single-window
+++ b/app/tests/gimpdir/sessionrc-expected-single-window
@@ -68,6 +68,7 @@
 
 (hide-docks no)
 (single-window-mode yes)
+(show-tabs yes)
 (tabs-position 0)
 (last-tip-shown 0)