Fix crash in startup when ZTS.
Fix crash in startup when ZTS.

nimishzynga/php-igbinary,yiliaofan/igbinary,Jan-E/igbinary,nimishzynga/php-igbinary,Jan-E/igbinary,ZeusbaseWeb/igbinary,yiliaofan/igbinary,derickr/igbinary,phadej/igbinary,igbinary/igbinary7,Jan-E/igbinary,yiliaofan/igbinary,phadej/igbinary,phadej/igbinary,Jan-E/igbinary,derickr/igbinary,Sean-Der/igbinary,derickr/igbinary,Sean-Der/igbinary,Jan-E/igbinary,igbinary/igbinary7,igbinary/igbinary7,ZeusbaseWeb/igbinary,Sean-Der/igbinary,nimishzynga/php-igbinary,nimishzynga/php-igbinary,igbinary/igbinary7,igbinary/igbinary7,ZeusbaseWeb/igbinary