Coverity report issues.

[mariusor]

These creep up every commit.

See comments for latest reports.

[mariusor]

CID	Type	Category	File	Function
275717	Dereference before null check	Null pointer dereferences	/src/scrobble.h	scrobble_copy
275720	Dereference before null check	Null pointer dereferences	/src/configuration.h	free_configuration
275724	Dereference before null check	Null pointer dereferences	/src/ini_base.h	ini_group_free
275725	Dereference before null check	Null pointer dereferences	/src/configuration.h	load_configuration
275786	Dereference before null check	Null pointer dereferences	/src/api.h	http_headers_free
278305	Dereference before null check	Null pointer dereferences	/src/stretchy_buffer.h	sb_arr_free
278307	Dereference before null check	Null pointer dereferences	/src/sevents.h	now_playing_payload_free
278308	Dereference before null check	Null pointer dereferences	/src/scrobbler.h	scrobbler_clean
278309	Dereference before null check	Null pointer dereferences	/src/scrobble.h	scrobbles_free
278310	Dereference before null check	Null pointer dereferences	/src/scrobbler.h	scrobbler_connection_free
278312	Dereference after null check	Null pointer dereferences	/src/signon.c	get_token
278313	Dereference after null check	Null pointer dereferences	/src/signon.c	get_session
279285	Dereference before null check	Null pointer dereferences	/src/ini_base.h	ini_config_clean