selinux: fix warning Comparison to bool

fix below warnings reported by coccicheck

security/selinux/ss/mls.c:539:39-43: WARNING: Comparison to bool
security/selinux/ss/services.c:1815:46-50: WARNING: Comparison to bool
security/selinux/ss/services.c:1827:46-50: WARNING: Comparison to bool
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

security/selinux/ss/mls.c

@@ -536,7 +536,7 @@ int mls_compute_sid(struct policydb *p,
 
 		/* Fallthrough */
 	case AVTAB_CHANGE:
-		if ((tclass == p->process_class) || (sock == true))
+		if ((tclass == p->process_class) || sock)
 			/* Use the process MLS attributes. */
 			return mls_context_cpy(newcontext, scontext);
 		else

security/selinux/ss/services.c

@@ -1812,7 +1812,7 @@ static int security_compute_sid(struct selinux_state *state,
 	} else if (cladatum && cladatum->default_role == DEFAULT_TARGET) {
 		newcontext.role = tcontext->role;
 	} else {
-		if ((tclass == policydb->process_class) || (sock == true))
+		if ((tclass == policydb->process_class) || sock)
 			newcontext.role = scontext->role;
 		else
 			newcontext.role = OBJECT_R_VAL;
@@ -1824,7 +1824,7 @@ static int security_compute_sid(struct selinux_state *state,
 	} else if (cladatum && cladatum->default_type == DEFAULT_TARGET) {
 		newcontext.type = tcontext->type;
 	} else {
-		if ((tclass == policydb->process_class) || (sock == true)) {
+		if ((tclass == policydb->process_class) || sock) {
 			/* Use the type of process. */
 			newcontext.type = scontext->type;
 		} else {