Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
  Fix #80889: Cannot set save handler when save_handler is invalid

diff --cc NEWS
index 1d9924c5410ec639ef149d82b3a263e7cf49e553,bfb249e46e6b1bb0a2687165d1e0627011b40311..430c07b951b6e9a43ca624dca7ea71bfcd9747df
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -18,14 -9,16 +18,18 @@@ PH
    . Fixed bug #80783 (PDO ODBC truncates BLOB records at every 256th byte).
      (cmb)
  
 -01 Apr 2021, PHP 7.4.17
+ - Session:
+   . Fixed bug #80889 (Cannot set save handler when save_handler is invalid).
+     (cmb)
+ 
 +01 Apr 2021, PHP 8.0.4
  
  - Core:
 -  . Fixed bug #80781 (Error handler that throws ErrorException infinite loop).
 -    (Nikita)
    . Fixed bug #75776 (Flushing streams with compression filter is broken). (cmb)
 +  . Fixed bug #80811 (Function exec without $output but with $restult_code
 +    parameter crashes). (Nikita)
 +  . Fixed bug #80814 (threaded mod_php won't load on FreeBSD: No space
 +    available for static Thread Local Storage). (Dmitry)
  
  - Dba:
    . Fixed bug #80817 (dba_popen() may cause segfault during RSHUTDOWN). (cmb)

diff --cc ext/session/session.c
Simple merge