[BUG] Segmentation fault in `queue.c`

[Arash1381-y]

Description

In the queue model (path : data_structures/queue/queue.c). dequeue won't work due to a simple bug on the last if clause of it. take a look:

C/data_structures/queue/queue.c

Line 65 in b1a8da6

head->next = NULL;

as you can see if we have only one variable in our queue on dequeue the HEAD will be null and assigning NULL to NULL->next will cause a segmentation fault.

Expected behavior

not to cause fault =)

Actual behavior

case segmentation fault

Possible fix

simply put line 65 in its above clause

Steps to reproduce

1. call create
2. enqueue anything you like
3. dequeue it

Context

It just don't work =)

Additional information

No response

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