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make sure HTTP_DNT is set before inspecting it

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This commit is contained in:
Andy Miller
2019-01-25 16:49:23 -07:00
parent 9058e1166d
commit 7c99ece0e1
1 changed files with 1 additions and 1 deletions
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2
system/src/Grav/Common/Browser.php
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@@ -143,7 +143,7 @@ class Browser
*/
public function isTrackable(): bool
{
if ($_SERVER['HTTP_DNT'] === '1') {
if (isset($_SERVER['HTTP_DNT']) && $_SERVER['HTTP_DNT'] === '1') {
return false;
}