Free stringbuffer on error case [coverity CID 29273]
(rdfa_complete_list_triples): Free bnode after loop [coverity CID 29272]

Also strdup() the rdf:nil string so it can be freed.
(raptor_rss10_serialize_end): Error path entry_uri cleanup [coverity CID 29270]
(raptor_rdfxml_serialize_statement): Free object_uri_string on error path [coverity CID 29269]
(raptor_rss_insert_rss_link): Free field on error path [coverity CID 29267]
(raptor_rss_end_element_handler): Free field on error path [coverity CID 29266]
(raptor_grddl_run_recursive): Free ibuffer [coverity CID 29265]
(raptor_world_guess_parser_name): Free scores on error path [coverity CID 29264]
(raptor_turtle_emit_subject_collection_items): Free iter on error path [coverity CID 29263]
(rdfa_init_base): Check for uri_start before use [coverity CID 29297]
(end_element): Add parent_context check around block [coverity CID 29296]
(raptor_log_error_varargs): Can assume world is not NULL [coverity CID 29294]
(raptor_rdfxmla_serialize_set_xml_writer): Check xml_writer NULL [coverity CID 29293]
(rdfa_complete_object_literal_triples): NULL check for context->xml_literal [coverity CID 29292]
(main): from_string and to_string are never NULL [coverity CID 29290, CID 29291]
(raptor_new_qname_from_namespace_local_name): move strlen after local_name NULL check [coverity CID 29289]
(raptor_new_abbrev_subject): node arg is never NULL [coverity CID 29288]