Revert r38189, it violated a basic principle of pool usage and allowed unbounded memory growth.
Revert r38189, it violated a basic principle of pool usage and allowed
unbounded memory growth.

Suggested by: hwright

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion