glib-networking: Fix module symbol exporting with MSVC

https://gitlab.gnome.org/GNOME/glib-networking/merge_requests/22

recipes/glib-networking.recipe

@@ -22,7 +22,9 @@ class Recipe(recipe.Recipe):
                # since we can no longer set the certificate path in glib-networking
                name + '/0003-Use-the-GnuTLS-system-trust-by-default.patch',
                name + '/0004-meson-Only-run-gio-querymodules-if-it-s-found.patch',
-               name + '/0001-Don-t-use-the-GCC-ternary-syntax-extension.patch']
+               name + '/0001-Don-t-use-the-GCC-ternary-syntax-extension.patch',
+               # https://gitlab.gnome.org/GNOME/glib-networking/merge_requests/22
+               name + '/0001-tls-modules-Export-load-unload-query-symbols-on-MSVC.patch']
 
     files_misc = ['lib/gio/modules/libgiognutls%(mext)s']
     files_lang = ['glib-networking']

recipes/glib-networking/0001-tls-modules-Export-load-unload-query-symbols-on-MSVC.patch

+From dab7c001aaf3f5863873f51a22f0c00b993f52ab Mon Sep 17 00:00:00 2001
+From: Nirbheek Chauhan <nirbheek@centricular.com>
+Date: Wed, 20 Feb 2019 14:47:04 +0530
+Subject: [PATCH] tls modules: Export load/unload/query symbols on MSVC
+
+These must be explicitly exported or the DLLs outputted won't be
+loadable
+
+'g_io_gnutls_load': The specified procedure could not be found.
+Failed to load module: c:\path\to\lib\gio\modules\giognutls.dll
+---
+ tls/gnutls/gnutls-module.c   | 6 +++---
+ tls/openssl/openssl-module.c | 6 +++---
+ 2 files changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/tls/gnutls/gnutls-module.c b/tls/gnutls/gnutls-module.c
+index 8983bd7..8dd09ca 100644
+--- a/tls/gnutls/gnutls-module.c
++++ b/tls/gnutls/gnutls-module.c
+@@ -30,7 +30,7 @@
+ #include "gtlsbackend-gnutls-pkcs11.h"
+ 
+ 
+-void
++G_MODULE_EXPORT void
+ g_io_gnutls_load (GIOModule *module)
+ {
+   gchar *locale_dir;
+@@ -53,12 +53,12 @@ g_io_gnutls_load (GIOModule *module)
+   g_free (locale_dir);
+ }
+ 
+-void
++G_MODULE_EXPORT void
+ g_io_gnutls_unload (GIOModule *module)
+ {
+ }
+ 
+-gchar **
++G_MODULE_EXPORT gchar **
+ g_io_gnutls_query (void)
+ {
+   gchar *eps[] = {
+-- 
+2.20.1
+