Fix potential crash when writing large error responses.
Fix potential crash when writing large error responses.

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