Fixed bug #67399 (putenv with empty variable may lead to crash)
Fixed bug #67399 (putenv with empty variable may lead to crash)
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  Fixed bug #67399 (putenv with empty variable may lead to crash)
Fixed bug #67399 (putenv with empty variable may lead to crash)
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Fixed bug #67399 (putenv with empty variable may lead to crash)
  Fixed bug #67399 (putenv with empty variable may lead to crash)