Fixes
- Prevent use after free error during the execution of some commands. Found by Joseph Bisch (GL#17, GL!24).
- Revert netsplit print optimisation due to crashes (#465, #809, #812, #819, #824).
- Fix use after free when SASL messages are received in unexpected order (GL#26, GL!33).
- Fix null pointer dereference in the tab completion when an empty nick is joined (GL#24, GL!31).
- Fix use after free when entering oper password (GL#22, GL!32).
- Fix null pointer dereference when too many windows are opened (GL#27, #837).
- Fix out of bounds access in theme strings when the last escape is incomplete. Credit to Oss-Fuzz (#842).
- Fix out of bounds write when using negative counts on window resize (GL#25, GL#29, #836).
- Minor help correction. By William Jackson (#834).