[gtk+] Fix make dist

[Chun-wei Fan <fanchunwei src gnome org>]

commit 1374645089e1e4d17b2e6c064a659813c2bf87a2
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Sep 23 23:31:23 2015 +0800

    Fix make dist
    
    Commit ea241c6 dropped the wrong private header from dist, so correct
    this to fix 'make dist'

 gtk/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index c416951..4236f22 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -365,6 +365,7 @@ gtk_private_h_sources =             \
        gtkcolorswatchprivate.h \
        gtkcoloreditorprivate.h \
        gtkcolorplaneprivate.h  \
+       gtkcolorscaleprivate.h  \
        gtkcolorchooserprivate.h        \
        gtkcomboboxprivate.h    \
        gtkcontainerprivate.h   \
@@ -494,7 +495,6 @@ gtk_private_h_sources =             \
        gtkrenderprivate.h      \
        gtkresources.h          \
        gtkroundedboxprivate.h  \
-       gtkscaleprivate.h       \
        gtksearchengine.h       \
        gtksearchenginesimple.h \
        gtksearchenginemodel.h  \