plugins: doveadm-sieve: doveadm-sieve-cmd-put - Fix script memory leak occurring when saved script is also activated.

lib-sieve: sieve-storage - Fix script memory leak occurring when saved script is implicitly activated.

Add NEWS from releases to master branch too

@@
expression E;
@@

- if (hash_table_is_created(E)) {
-       hash_table_destroy(&E);
- }
+ hash_table_destroy(&E);

lib-sieve: redirect action: Assert that dupeid is not NULL when act_redirect_get_duplicate_id() is successful.

Addresses scan-build report.