Fix Union Station support on older libcurl versions like on RHEL5: older libcurls didn't strdup() the string.
Fix Union Station support on older libcurl versions like on RHEL5: older libcurls didn't strdup() the string.

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