commit b3e4270: [Minor] Fix check for image urls

[Vsevolod Stakhov]

Author: Vsevolod Stakhov
Date: 2021-07-28 14:57:15 +0100
URL: https://github.com/rspamd/rspamd/commit/b3e427079527a5bf958e1d3de52c686a7accc33b

[Minor] Fix check for image urls

---
 src/libserver/html/html.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/libserver/html/html.cxx b/src/libserver/html/html.cxx
index 0d76a22da..53fe815dd 100644
--- a/src/libserver/html/html.cxx
+++ b/src/libserver/html/html.cxx
@@ -823,9 +823,10 @@ html_process_img_tag(rspamd_mempool_t *pool,
 								struct rspamd_url *existing;
 
 								img->url->flags |= RSPAMD_URL_FLAG_IMAGE;
-								existing = rspamd_url_set_add_or_return(url_set, img->url);
+								existing = rspamd_url_set_add_or_return(url_set,
+										img->url);
 
-								if (existing != img->url) {
+								if (existing && existing != img->url) {
 									/*
 									 * We have some other URL that could be
 									 * found, e.g. from another part. However,