/usr/lib/timidity/bitmaps/quit.xbm is in timidity 2.13.2-40.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | #define quit_width 22
#define quit_height 22
static unsigned char quit_bits[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x1e, 0x00,
0x00, 0x3f, 0x00, 0x80, 0x7f, 0x00, 0xc0, 0xff, 0x00, 0xe0, 0xff, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0xff, 0x01, 0xe0, 0xff, 0x01,
0xe0, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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