[balsa/72-fix-web-context-init-deadlock] fix deadlock initialising the common HTML web view context

[Albrecht Dreß <albrecht src gnome org>]

commit 32ef70244e9a57d910c5fc6580d457cc4e2a2863
Author: Albrecht Dreß <albrecht dress netcologne de>
Date:   Mon Apr 4 19:55:01 2022 +0200

    fix deadlock initialising the common HTML web view context
    
    See the discussion
    https://gitlab.gnome.org/GNOME/balsa/-/issues/72#note_1422420 ff.:
    
    - libbalsa/html.[c]: export helper to initialise the common
    WebKitWebContext
    - libbalsa/libbalsa.c: call it in libbalsa_init()
    
    Signed-off-by: Albrecht Dreß <albrecht dress netcologne de>

 libbalsa/html.c     | 11 +++++++++++
 libbalsa/html.h     |  1 +
 libbalsa/libbalsa.c |  4 ++++
 3 files changed, 16 insertions(+)
---
diff --git a/libbalsa/html.c b/libbalsa/html.c
index bb34ef817..d2375e799 100644
--- a/libbalsa/html.c
+++ b/libbalsa/html.c
@@ -190,6 +190,17 @@ typedef struct {
 
 #define LIBBALSA_HTML_INFO "libbalsa-webkit2-info"
 
+
+static WebKitWebContext *lbh_get_web_view_context(void);
+
+
+void
+libbalsa_html_init(void)
+{
+       (void) lbh_get_web_view_context();
+}
+
+
 /*
  * Unlike older HTML widgets, webkit2 wants UTF-8 text
  */
diff --git a/libbalsa/html.h b/libbalsa/html.h
index a46af578e..87d726126 100644
--- a/libbalsa/html.h
+++ b/libbalsa/html.h
@@ -42,6 +42,7 @@ typedef enum {
 
 typedef void (*LibBalsaHtmlCallback) (const gchar * uri);
 
+void libbalsa_html_init(void);
 GtkWidget *libbalsa_html_new(LibBalsaMessageBody * body,
                              LibBalsaHtmlCallback hover_cb,
                              LibBalsaHtmlCallback clicked_cb,
diff --git a/libbalsa/libbalsa.c b/libbalsa/libbalsa.c
index fe48f1a41..6da54f574 100644
--- a/libbalsa/libbalsa.c
+++ b/libbalsa/libbalsa.c
@@ -46,6 +46,7 @@
 #include "misc.h"
 #include "missing.h"
 #include "x509-cert-widget.h"
+#include "html.h"
 #include <glib/gi18n.h>
 
 static GThread *main_thread_id;
@@ -86,6 +87,9 @@ libbalsa_init(void)
 #if HAVE_OSMO
     LIBBALSA_TYPE_ADDRESS_BOOK_OSMO;
 #endif
+#ifdef HAVE_HTML_WIDGET
+    libbalsa_html_init();
+#endif
 }