Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
  Fix #75673: SplStack::unserialize() behavior

diff --cc NEWS
index 7902b675226bf2430260cec5b3e4572b11d13054,f3750061e169e2b9c84bd09b633d1252e40fd3f2..7e6b0377d1bc79350fe69bcf439c729f4f4b43dd
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -1,10 -1,13 +1,15 @@@
  PHP                                                                        NEWS
  |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 -?? ??? ????, PHP 7.3.17
 +
++?? ??? ????, PHP 7.4.5
+ 
+ - Spl:
+   . Fixed bug #75673 (SplStack::unserialize() behavior). (cmb)
+ 
 -19 Mar 2020, PHP 7.3.16
 +?? ??? ????, PHP 7.4.4
  
  - Core:
 +  . Fixed bug #79244 (php crashes during parsing INI file). (Laruence)
    . Fixed bug #63206 (restore_error_handler does not restore previous errors
      mask). (Mark Plomer)
  

diff --cc ext/spl/spl_dllist.c
Simple merge