Fix empty gateway->path with glib > 2.68

Starting with glib 2.69 g_match_info_fetch() returns an empty string
instead of NULL in case when no match was found. Properly handle this
case.

Signed-off-by: Artem Savkov <asavkov@redhat.com>

src/discord-handlers.c

@@ -601,6 +601,7 @@ static gboolean discord_prepare_message(struct im_connection *ic,
   gboolean posted = FALSE;
   gchar *msg = json_o_strdup(minfo, "content");
   json_value *jpinned = json_o_get(minfo, "pinned");
+  json_value *ref = json_o_get(minfo, "referenced_message");
   gboolean pinned = (jpinned != NULL && jpinned->type == json_boolean) ?
                        jpinned->u.boolean : FALSE;
 
@@ -618,6 +619,16 @@ static gboolean discord_prepare_message(struct im_connection *ic,
     return FALSE;
   }
 
+  if (ref != NULL && ref->type == json_object) {
+    gchar *rauthor = discord_canonize_name(json_o_str(json_o_get(ref,
+            "author"), "username"));
+    gchar *rmsg = g_strdup_printf("IN_REPLY_TO: %s> %.50s...", rauthor,
+        json_o_str(ref, "content"));
+    posted = discord_post_message(cinfo, author, rmsg, is_self, tstamp);
+    g_free(rmsg);
+    g_free(rauthor);
+  }
+
   if (pinned == TRUE) {
     gchar *newmsg = g_strconcat("PINNED: ", msg, NULL);
     g_free(msg);

src/discord-http.c

@@ -175,6 +175,9 @@ static void discord_http_gateway_cb(struct http_request *req)
 
     if (dd->gateway->path == NULL) {
       dd->gateway->path = g_strdup("/?encoding=json&v=6");
+    } else if (g_strcmp0(dd->gateway->path, "") == 0) {
+      g_free(dd->gateway->path);
+      dd->gateway->path = g_strdup("/?encoding=json&v=6");
     }
 
     g_match_info_free(match);

src/discord-websockets.c

@@ -360,6 +360,8 @@ static gboolean discord_ws_connected_cb(gpointer data, int retcode,
 
   g_free(bkey);
 
+  discord_debug(">>> (%s) %s %"G_GSIZE_FORMAT"\n%s\n", dd->uname, __func__, req->len, req->str);
+
   dd->sslfd = ssl_getfd(source);
   dd->inpa = b_input_add(dd->sslfd, B_EV_IO_READ, discord_ws_in_cb, ic);
   ssl_write(dd->ssl, req->str, req->len);