Reduce stack usage, 32 bytes are enough here, no need to take 8k in the stack....

Reduce stack usage, 32 bytes are enough here, no need to take 8k in the stack. (19 would be enough, but be safe...)

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1491221 13f79535-47bb-0310-9956-ffa450edef68