[glom] Box_Formatting: Also hide the multiline-height label.

[Murray Cumming <murrayc src gnome org>]

commit 91d2ba41955bc0864a9621379989af44c478a073
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Dec 3 10:11:21 2014 +0100

    Box_Formatting: Also hide the multiline-height label.
    
    Found by Coverity Scan as a Copy-Paste Error.

 .../layout/layout_item_dialogs/box_formatting.cc   |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glom/mode_design/layout/layout_item_dialogs/box_formatting.cc 
b/glom/mode_design/layout/layout_item_dialogs/box_formatting.cc
index d17268d..ba87259 100644
--- a/glom/mode_design/layout/layout_item_dialogs/box_formatting.cc
+++ b/glom/mode_design/layout/layout_item_dialogs/box_formatting.cc
@@ -516,7 +516,7 @@ void Box_Formatting::enforce_constraints()
     else
     {
       m_checkbox_format_text_multiline->show();
-      m_label_format_text_multiline_height->hide();
+      m_label_format_text_multiline_height->show();
       m_spinbutton_format_text_multiline_height->show();
     }