Issue #124, case 1: Added test for this case
Actual fix is in stx:libbasic, revision 3563e89f551b.
https://swing.fit.cvut.cz/projects/stx-jv/ticket/124#comment:19
#define xbm_width 9
#define xbm_height 9
static char xbm_bits[] = {
0x00, 0x00,
0x00, 0x00,
0x00, 0x00,
0xFE, 0x00,
0x7C, 0x00,
0x38, 0x00,
0x10, 0x00,
0x00, 0x00,
0x00, 0x00,
};