[gimp] libgimpwidgets: fix registration of GimpRuler's "unit" property

[Michael Natterer <mitch src gnome org>]

commit affef350e783b25f11c39a83861f3d018f85336d
Author: Michael Natterer <mitch gimp org>
Date:   Sun Jun 14 22:57:46 2015 +0200

    libgimpwidgets: fix registration of GimpRuler's "unit" property
    
    Install it with the PROP_UNIT id not PROP_LOWER (probably a copy &
    paste mess). Spotted by John Cuppit.

 libgimpwidgets/gimpruler.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgimpwidgets/gimpruler.c b/libgimpwidgets/gimpruler.c
index 5c8c96a..32d768f 100644
--- a/libgimpwidgets/gimpruler.c
+++ b/libgimpwidgets/gimpruler.c
@@ -164,7 +164,7 @@ gimp_ruler_class_init (GimpRulerClass *klass)
                                                       GIMP_PARAM_READWRITE));
 
   g_object_class_install_property (object_class,
-                                   PROP_LOWER,
+                                   PROP_UNIT,
                                    gimp_param_spec_unit ("unit",
                                                          "Unit",
                                                          "Unit of ruler",