This should actually never happen because we have the mechanism that
checks the commands. But let's do it in case we break something in that
mechanism and to make clang happy.
Fixes clangs: 'Argument with 'nonnull' attribute passed null'
Instead of only checking for files when 'last_directory' has changed, do
it every time.
Add autocomplete_update function that updates the items while retaining
last_found and search_str.
Fixes#1099
Before 3700c80ad1 we used to run the tests
only one time. 3700c80ad1 removed it by
accident alltogether.
Now we run it with every flag combination. Might take too long.
Fix:
```
==18682== 408 bytes in 17 blocks are definitely lost in loss record
3,279 of 3,632
==18682== at 0x483677F: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==18682== by 0x42F602: roster_update_presence (roster_list.c:129)
==18682== by 0x448AA3: sv_ev_contact_online (server_events.c:906)
==18682== by 0x43D2BA: _available_handler (presence.c:674)
==18682== by 0x43C81B: _presence_handler (presence.c:398)
==18682== by 0x5AF118E: handler_fire_stanza (handler.c:124)
==18682== by 0x5AEDBDA: _handle_stream_stanza (conn.c:1253)
==18682== by 0x5AFA43E: _end_element (parser_expat.c:190)
==18682== by 0x6818AA4: doContent (xmlparse.c:2977)
==18682== by 0x681A3AB: contentProcessor (xmlparse.c:2552)
==18682== by 0x681D7EB: XML_ParseBuffer (xmlparse.c:1988)
==18682== by 0x681D7EB: XML_ParseBuffer (xmlparse.c:1957)
==18682== by 0x5AF0A63: xmpp_run_once (event.c:255)
==18682== by 0x432E5D: connection_check_events (connection.c:104)
==18682== by 0x4323B3: session_process_events (session.c:255)
==18682== by 0x42C097: prof_run (profanity.c:128)
==18682== by 0x4B25B9: main (main.c:172)
```
omemo_key_free() was called to free the key.
It free the key->data too. But in same cases this was not set yet. So
we need to set the data to NULL (or use calloc) at initialization so
that omemo_key_free() only frees it if it was actually allocated.
Regards https://github.com/profanity-im/profanity/issues/1148
