[devhelp] Book: rename private struct DhBookMonitorEvent -> BookMonitorEvent

[Sébastien Wilmet <swilmet src gnome org>]

commit 5b9e754e4bec8ef2d82e500bedb5d0361929d482
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Dec 10 10:20:51 2017 +0100

    Book: rename private struct DhBookMonitorEvent -> BookMonitorEvent
    
    With the Dh namespace we can think that it's a public struct.

 src/dh-book.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/dh-book.c b/src/dh-book.c
index b98c401..cbfda72 100644
--- a/src/dh-book.c
+++ b/src/dh-book.c
@@ -54,7 +54,7 @@ typedef enum {
         BOOK_MONITOR_EVENT_NONE,
         BOOK_MONITOR_EVENT_UPDATED,
         BOOK_MONITOR_EVENT_DELETED
-} DhBookMonitorEvent;
+} BookMonitorEvent;
 
 typedef struct {
         GFile *index_file;
@@ -75,7 +75,7 @@ typedef struct {
         GFileMonitor *monitor;
 
         /* Last received event. */
-        DhBookMonitorEvent monitor_event;
+        BookMonitorEvent monitor_event;
 
         guint monitor_event_timeout_id;
 
@@ -196,7 +196,7 @@ book_monitor_event_timeout_cb (gpointer data)
 {
         DhBook *book = data;
         DhBookPrivate *priv = dh_book_get_instance_private (book);
-        DhBookMonitorEvent monitor_event = priv->monitor_event;
+        BookMonitorEvent monitor_event = priv->monitor_event;
 
         /* Reset event */
         priv->monitor_event = BOOK_MONITOR_EVENT_NONE;