Fix phpstan level 9 error for f.php and lib/favicons.php (#5263)

* Fix phpstan level 9 error

* Fix phpstan level 9 error

* Remarque's from Alkarex

---------

Co-authored-by: Luc <sanchezluc+freshrss@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/p/f.php b/p/f.php
index 7837407e2..6e30b64b2 100644
--- a/p/f.php
+++ b/p/f.php
@@ -32,6 +32,10 @@ if ($ico_mtime == false || $ico_mtime < $txt_mtime || ($ico_mtime < time() - (mt
 
 	// no ico file or we should download a new one.
 	$url = file_get_contents($txt);
+	if ($url === false) {
+		show_default_favicon(1800);
+		exit();
+	}
 	if (!download_favicon($url, $ico)) {
 		// Download failed
 		if ($ico_mtime == false) {