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 <a.senichev@yadro.com>
Change-Id: I8e8bd54e7aaa4ddb813cec3485404b6ba7a29ffa
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/84518
Reviewed-by: Corey V Swenson <cswenson@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>

Author: Artem Senichev

src/usr/errl/plugins/errludparser.H

@@ -5,8 +5,9 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2018                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2019                        */
 /* [+] International Business Machines Corp.                              */
+/* [+] YADRO                                                              */
 /*                                                                        */
 /*                                                                        */
 /* Licensed under the Apache License, Version 2.0 (the "License");        */
@@ -84,6 +85,7 @@ static bool myDataParse(\
     {\
         l_rc = true;\
         l_pParser->parse(i_ver, i_parser, i_buffer, i_buflen);\
+        delete l_pParser;\
     }\
     return l_rc;\
 }\