Merge branch 'master' into jgrpp

# Conflicts:
#	src/cheat_gui.cpp
#	src/command.cpp
#	src/command_func.h
#	src/company_base.h
#	src/debug.cpp
#	src/debug.h
#	src/economy.cpp
#	src/engine_type.h
#	src/graph_gui.cpp
#	src/misc_cmd.cpp
#	src/misc_cmd.h
#	src/network/core/os_abstraction.cpp
#	src/openttd.cpp
#	src/saveload/saveload.cpp
#	src/saveload/saveload.h
#	src/settings_type.h
#	src/ship_cmd.cpp
#	src/stdafx.h
#	src/tests/bitmath_func.cpp
#	src/town_cmd.cpp
#	src/town_gui.cpp

src/os/windows/library_loader_win.cpp

@@ -20,13 +20,13 @@ static std::string GetLoadError()
 {
 	auto error_code = GetLastError();
 
-	char buffer[512];
-	if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, error_code,
-		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, sizeof(buffer), nullptr) == 0) {
+	wchar_t buffer[512];
+	if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr, error_code,
+		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, lengthof(buffer), nullptr) == 0) {
 		return fmt::format("Unknown error {}", error_code);
 	}
 
-	return buffer;
+	return FS2OTTD(buffer);
 }
 
 void *LibraryLoader::OpenLibrary(const std::string &filename)