Ensure instances of auto types are initialized

Follow-up of #1913

Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>

src/xmpp/avatar.c

@@ -126,7 +126,7 @@ avatar_set(const char* path)
         pixbuf = new_pixbuf;
     }
 
-    auto_gchar gchar* img_data;
+    auto_gchar gchar* img_data = NULL;
     gsize len = -1;
 
     if (!gdk_pixbuf_save_to_buffer(pixbuf, &img_data, &len, "png", &err, NULL)) {

src/xmpp/message.c

@@ -98,6 +98,20 @@ static xmpp_stanza_t* _ox_openpgp_signcrypt(xmpp_ctx_t* ctx, const char* const t
 
 static GHashTable* pubsub_event_handlers;
 
+gchar*
+get_display_name(const ProfMessage* const message, int* flags)
+{
+    auto_char char* barejid = connection_get_barejid();
+
+    if (g_strcmp0(barejid, message->from_jid->barejid) == 0) {
+        return g_strdup("me");
+    } else {
+        if (flags)
+            *flags = NO_ME;
+        return roster_get_msg_display_name(message->from_jid->barejid, message->from_jid->resourcepart);
+    }
+}
+
 static gboolean
 _handled_by_plugin(xmpp_stanza_t* const stanza)
 {

src/xmpp/vcard.c

@@ -1350,7 +1350,7 @@ _vcard_photo_result(xmpp_stanza_t* const stanza, void* userdata)
     }
 
     if (data->open) {
-        auto_gcharv gchar** argv;
+        auto_gcharv gchar** argv = NULL;
         gint argc;
 
         auto_gchar gchar* cmdtemplate = prefs_get_string(PREF_VCARD_PHOTO_CMD);

src/xmpp/xmpp.h

@@ -317,4 +317,5 @@ void form_reset_autocompleters(DataForm* form);
 
 void publish_user_mood(const char* const mood, const char* const text);
 
+gchar* get_display_name(const ProfMessage* const message, int* flags);
 #endif