checkpolicy: drop never read member

The struct scope_stack member child is never read, drop it.

Signed-off-by: Christian Göttsche <[email protected]>
Acked-by: James Carter <[email protected]>

checkpolicy/module_compiler.c

@@ -34,7 +34,7 @@ typedef struct scope_stack {
  avrule_t *last_avrule;
  int in_else; /* if in an avrule block, within ELSE branch */
  int require_given; /* 1 if this block had at least one require */
- struct scope_stack *parent, *child;
+ struct scope_stack *parent;
 } scope_stack_t;
 
 extern policydb_t *policydbp;
@@ -1478,7 +1478,6 @@ static int push_stack(int stack_type, ...)
  }
  va_end(ap);
  s->parent = stack_top;
- s->child = NULL;
  stack_top = s;
  return 0;
 }
@@ -1490,9 +1489,6 @@ static void pop_stack(void)
  scope_stack_t *parent;
  assert(stack_top != NULL);
  parent = stack_top->parent;
- if (parent != NULL) {
- parent->child = NULL;
- }
  free(stack_top);
  stack_top = parent;
 }