Fix a crash on MacOS X.
Fix a crash on MacOS X.

pkmiec/passenger,gravitystorm/passenger,kewaunited/passenger,clemensg/passenger,gravitystorm/passenger,antek-drzewiecki/passenger,phusion/passenger,pkmiec/passenger,fabiokung/passenger-debian,phusion/passenger,clemensg/passenger,jawj/passenger,jawj/passenger,erikogan/passenger,jawj/passenger,openSUSE/passenger,kewaunited/passenger,cgvarela/passenger,fabiokung/passenger-debian,gravitystorm/passenger,pkmiec/passenger,phusion/passenger,clemensg/passenger,openSUSE/passenger,cgvarela/passenger,clemensg/passenger,erikogan/passenger,phusion/passenger,clemensg/passenger,phusion/passenger,openSUSE/passenger,fabiokung/passenger-debian,erikogan/passenger,bf4/passenger,bf4/passenger,bf4/passenger,cgvarela/passenger,cgvarela/passenger,kewaunited/passenger,antek-drzewiecki/passenger,fabiokung/passenger-debian,antek-drzewiecki/passenger,erikogan/passenger,openSUSE/passenger,erikogan/passenger,pkmiec/passenger,phusion/passenger,bf4/passenger,antek-drzewiecki/passenger,bf4/passenger,bf4/passenger,pkmiec/passenger,openSUSE/passenger,kewaunited/passenger,jawj/passenger,cgvarela/passenger,jawj/passenger,pkmiec/passenger,gravitystorm/passenger,antek-drzewiecki/passenger,cgvarela/passenger,jawj/passenger,kewaunited/passenger,bf4/passenger,antek-drzewiecki/passenger,clemensg/passenger,antek-drzewiecki/passenger,jawj/passenger,pkmiec/passenger,erikogan/passenger,antek-drzewiecki/passenger,openSUSE/passenger,cgvarela/passenger,cgvarela/passenger,fabiokung/passenger-debian,clemensg/passenger,phusion/passenger,kewaunited/passenger,kewaunited/passenger,gravitystorm/passenger,clemensg/passenger,kewaunited/passenger,gravitystorm/passenger,fabiokung/passenger-debian,phusion/passenger