core: fix potential NULL pointer in function gui_color_emphasize
core: fix memory leak and use of invalid pointer in split of string (in case of insufficient memory)
core: fix uninitialized value in function string_decode_base64
core: comment unneeded assignment in function string_split_shell (make C static analyzer happy)
core: fix use of invalid pointer in function gui_bar_window_content_alloc (in case of insufficient memory)
irc: remove dead assignments in functions irc_server_str(n)casecmp
core: remove dead assignment in function gui_chat_printf_y
script: remove dead assignments in functions script_action_{unload|reload}
irc: fix read of MODES server value when in commands /op, /deop, /voice, /devoice, /halfop, /dehalfop
relay: remove dead assignment in function relay_irc_get_line_info
xfer: remove dead assignment in function xfer_add_cb
irc: remove dead assignment in function irc_ignore_check
core: remove dead assignment in function gui_bar_window_draw
relay: remove dead assignment in function relay_client_recv_cb
core: remove dead assignment in function gui_key_pressed
core: fix memory leak in function gui_key_add_to_infolist (in case of insufficient memory)
irc: set option irc.network.autoreconnect_delay_max to 600 by default, increase max value to 604800 seconds (7 days)
scripts: fix crash when a signal is received with type "int" and NULL pointer in signal_data
trigger: fix crash when a signal is received with type "int" and NULL pointer in signal_data
core: fix potential dereference of NULL pointer in function command_set_display_option