[balsa/wip/gtk4: 342/351] print-object-header: Make it private

[Peter Bloomfield <peterb src gnome org>]

commit 343adf7025775f05d15bb172842afec071e5f1fe
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Sun May 6 19:59:31 2018 -0400

    print-object-header: Make it private

 src/balsa-print-object-header.c |    9 +++++++++
 src/balsa-print-object-header.h |   10 ----------
 2 files changed, 9 insertions(+), 10 deletions(-)
---
diff --git a/src/balsa-print-object-header.c b/src/balsa-print-object-header.c
index b7fe69d..00c4323 100644
--- a/src/balsa-print-object-header.c
+++ b/src/balsa-print-object-header.c
@@ -52,6 +52,15 @@ static void header_add_list(PangoLayout         *layout,
                             gboolean             print_all_headers);
 
 
+struct _BalsaPrintObjectHeader {
+    BalsaPrintObject parent;
+
+    gint p_label_width;
+    gint p_layout_width;
+    gchar *headers;
+    GdkPixbuf *face;
+};
+
 G_DEFINE_TYPE(BalsaPrintObjectHeader,
               balsa_print_object_header,
               BALSA_TYPE_PRINT_OBJECT)
diff --git a/src/balsa-print-object-header.h b/src/balsa-print-object-header.h
index 69309ae..46a8ad6 100644
--- a/src/balsa-print-object-header.h
+++ b/src/balsa-print-object-header.h
@@ -36,16 +36,6 @@ G_DECLARE_FINAL_TYPE(BalsaPrintObjectHeader,
                      BalsaPrintObject);
 
 
-struct _BalsaPrintObjectHeader {
-    BalsaPrintObject parent;
-
-    gint p_label_width;
-    gint p_layout_width;
-    gchar *headers;
-    GdkPixbuf *face;
-};
-
-
 GList *balsa_print_object_header_from_message(GList           *list,
                                               GtkPrintContext *context,
                                               LibBalsaMessage *message,