paftools stat: Cannot read property '0' of undefined

[tseemann]

I assume paftools stat needs a CIGAR string via --cs option etc.

Perhaps exit after first missing CIGAR and give a friendly error to this effect?

WARNING: no CIGAR at line 1
<snip>
/home/linuxbrew/.linuxbrew/bin/paftools.js:578: TypeError: Cannot read property '0' of undefined
                var st = regs[0][0], en = regs[0][1], l = 0;
                  ^
TypeError: Cannot read property '0' of undefined
    at cov_len (/home/linuxbrew/.linuxbrew/bin/paftools.js:578:19)
    at paf_stat (/home/linuxbrew/.linuxbrew/bin/paftools.js:679:11)
    at main (/home/linuxbrew/.linuxbrew/bin/paftools.js:2020:26)
    at /home/linuxbrew/.linuxbrew/bin/paftools.js:2033:1

[lh3]

Fixed via 39f836e. Thanks.