Merge branch 'master' of https://git.php.net/repository/php-src

* 'master' of https://git.php.net/repository/php-src:
  Remove compile warning:    warning: unused variable ‘j’ [-Wunused-variable]
  Remove compile warnings:   warning: variable ‘lastch’ set but not used [-Wunused-but-set-variable]   warning: variable ‘buf’ set but not used [-Wunused-but-set-variable]
  Remove compile warning: variable ‘streamp’ set but not used [-Wunused-but-set-variable]
  Remove compile warnings:   variable ‘obj_cnt’ set but not used [-Wunused-but-set-variable]   unused variable ‘last’ [-Wunused-variable]   unused variable ‘j’ [-Wunused-variable]
  Remove compile warning "variable ‘mekeylen’ set but not used"
  Reduce (some more) compile noise of 'unused variable' and 'may be used uninitialized' warnings.
  Update NEWS