app, libgimpwidgets: fixing some obsolete unit format strings I missed.

app/dialogs/preferences-dialog.c

@@ -2849,7 +2849,7 @@ prefs_dialog_new (Gimp       *gimp,
                            GTK_CONTAINER (vbox), FALSE);
 
   {
-    gchar *pixels_per_unit = g_strconcat (_("Pixels"), "/%s", NULL);
+    gchar *pixels_per_unit = g_strconcat (_("Pixels"), "/%a", NULL);
 
     entry = gimp_prop_coordinates_new (object,
                                        "monitor-xresolution",

app/widgets/gimpimagepropview.c

@@ -458,7 +458,7 @@ gimp_image_prop_view_update (GimpImagePropView *view)
   unit        = gimp_image_get_unit (image);
   unit_factor = gimp_unit_get_factor (unit);
 
-  g_snprintf (format_buf, sizeof (format_buf), _("pixels/%s"),
+  g_snprintf (format_buf, sizeof (format_buf), _("pixels/%a"),
               gimp_unit_get_abbreviation (unit));
   g_snprintf (buf, sizeof (buf), _("%g × %g %s"),
               xres / unit_factor,

libgimpwidgets/gimpunitstore.c

@@ -175,7 +175,7 @@ gimp_unit_store_class_init (GimpUnitStoreClass *klass)
                                    g_param_spec_string ("long-format",
                                                         "Long Format",
                                                         "Format string for a long label",
-                                                        "%p",
+                                                        "%n",
                                                         GIMP_PARAM_READWRITE));
 }