* e-summary.c (destroy): free the protocol hash.
* e-summary-rdf.c (tree_walk): plug a leak.
* e-summary-weather.c (e_summary_weather_init_locations): Don't
insert duplicates into the hash table.
* e-summary-mail.c (e_summary_mail_generate_html): free old html
before setting new
* e-summary.c (e_summary_draw): free weather and rdf html strings.
* e-summary-preferences.c (save_known_rdfs): free strings.
svn path=/trunk/; revision=12747