bug(join): -e argument fully ignored in the uutils join

[HackingRepo]

Hi, uutils mainteners

a very important weird bug hidden for years and not discovered with the uutils join our testing confirm that

relunsec@relunsec:~/software/coreutils/target/debug$ ./join -e EMPTYLINE a a
hello




































relunsec@relunsec:~/software/coreutils/target/debug$ 

as you can see the argument ignored and nothing applied as you can the gnu one join work fine

relunsec@relunsec:~/software/coreutils/target/debug$ gnujoin -e EMPTYLINE a a
hello
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE
EMPTYLINE