Use consistent indentation
This makes the indentation consistent to use 4 spaces in the assembly.
When you merged the reformatting in 60e272cb, you changed most indentation from 8 to 4 spaces but did not adjust the call to
exit and the interrupt.
I used 8 spaces because of the NASM docs.
Another note: When
msg got simplified to no longer use
LF explicitly but instead use the NASM feature to use C-format strings, these two symbols were removed. Should we then remove two lines from the symbol table?