util: regular array initializer in textcanvas
util: regular array initializer in textcanvas

Replace mapping of line-drawing characters to internal incoding with
a regularly defined array (instead of designated initializers).

Signed-off-by: Nico Reißmann <d8255cca0642bdc1e6f9b45da9cb618d308e389b@gmail.com>

phate/jive,phate/jive,phate/jive