'last line needs update' flag cannot be set when console is empty as there are no lines at all in this case
https://forum.zdoom.org/viewtopic.php?t=64909
# Conflicts:
# src/c_consolebuffer.cpp
This also necessitated some character remapping in the console font to move the Windows-1252 extra characters to their proper Unicode code points.
# Conflicts:
# src/CMakeLists.txt
# src/posix/sdl/i_input.cpp
# src/scripting/backend/codegen.cpp
# src/v_font.cpp
# Conflicts:
# src/c_console.cpp
Calling the old method with a pointer to an array of unspecified length 'dirty' would be an understatement.
Now it uses a TArray to store the single elements
# Conflicts:
# src/g_shared/hudmessages.cpp
# src/v_font.cpp
