cookie: Don't expire session cookies in remove_expired

Prior to this change cookies with an expiry date that failed parsing
and were converted to session cookies could be purged in remove_expired.

Bug: https://github.com/curl/curl/issues/697
Reported-by: Seth Mos

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/cookie.c b/lib/cookie.c
index 1fd97c013..558b6a7f2 100644
--- a/lib/cookie.c
+++ b/lib/cookie.c
@@ -309,7 +309,7 @@ static void remove_expired(struct CookieInfo *cookies)
   pv = NULL;
   while(co) {
     nx = co->next;
-    if((co->expirestr || co->maxage) && co->expires < now) {
+    if(co->expires && co->expires < now) {
       if(co == cookies->cookies) {
         cookies->cookies = co->next;
       }