Error when producing lyndon factor with -L

[albertiniufu]

Using file created by

`echo -n "GA" > 2chars.txt`

Running ./main -L -s -f 2chars.txt

Resulting .pos file is

0
1

And resulting .lyn file is:

G
#

Error is NOT printing A.

If flag -f is not used, there is also a problem:
.pos file:

0
1
2

.lyn file:

GA```