Merge branch 'master' into jgrpp-beta

# Conflicts:
#	.github/workflows/commit-checker.yml
#	src/company_cmd.cpp
#	src/console_cmds.cpp
#	src/crashlog.cpp
#	src/lang/english.txt
#	src/lang/german.txt
#	src/lang/indonesian.txt
#	src/lang/japanese.txt
#	src/lang/korean.txt
#	src/lang/swedish.txt
#	src/linkgraph/linkgraphjob.cpp
#	src/linkgraph/mcf.cpp
#	src/network/core/tcp.cpp
#	src/network/core/tcp.h
#	src/network/core/tcp_game.h
#	src/network/core/udp.h
#	src/network/network.cpp
#	src/network/network_admin.cpp
#	src/network/network_admin.h
#	src/network/network_chat_gui.cpp
#	src/network/network_client.cpp
#	src/network/network_client.h
#	src/network/network_func.h
#	src/network/network_internal.h
#	src/network/network_server.cpp
#	src/network/network_server.h
#	src/newgrf.cpp
#	src/newgrf_station.cpp
#	src/order_gui.cpp
#	src/rail_cmd.cpp
#	src/saveload/saveload.cpp
#	src/settings.cpp
#	src/settings_gui.cpp
#	src/settings_internal.h
#	src/settings_type.h
#	src/station_cmd.cpp
#	src/stdafx.h
#	src/table/currency_settings.ini
#	src/table/misc_settings.ini
#	src/table/settings.h.preamble
#	src/table/settings.ini
#	src/terraform_cmd.cpp
#	src/timetable_gui.cpp
#	src/train_cmd.cpp
#	src/tree_cmd.cpp
#	src/water_cmd.cpp

src/error.h

@@ -45,6 +45,9 @@ public:
 	~ErrorMessageData();
 	ErrorMessageData(StringID summary_msg, StringID detailed_msg, uint duration = 0, int x = 0, int y = 0, const GRFFile *textref_stack_grffile = nullptr, uint textref_stack_size = 0, const uint32 *textref_stack = nullptr, StringID extra_msg = INVALID_STRING_ID);
 
+	/* Remove the copy assignment, as the default implementation will not do the right thing. */
+	ErrorMessageData &operator=(ErrorMessageData &rhs) = delete;
+
 	/** Check whether error window shall display a company manager face */
 	bool HasFace() const { return face != INVALID_COMPANY; }