errl: Free memory allocated for parsers
errl: Free memory allocated for parsers

Errl's factory creates new instance of User Defined Data parser
on every call, but doesn't free it after usage.

Resolves #184
Signed-off-by: Artem Senichev <0c258a2f6ea4356be7cf47b2488f5bb8b6c3902c@yadro.com>
Change-Id: I8e8bd54e7aaa4ddb813cec3485404b6ba7a29ffa
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/84519
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Daniel M Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot