Don't scan for posture checks if there are 0 posture checks in the sy…

…stem. Fixes #1576

controller/model/edge_service_manager.go

@@ -329,6 +329,7 @@ type PolicyPostureChecks struct {
 
 func (self *EdgeServiceManager) GetPolicyPostureChecks(identityId, serviceId string) map[string]*PolicyPostureChecks {
 	policyIdToChecks := map[string]*PolicyPostureChecks{}
+
 	postureCheckCache := map[string]*PostureCheck{}
 
 	servicePolicyStore := self.env.GetStores().ServicePolicy
@@ -339,6 +340,10 @@ func (self *EdgeServiceManager) GetPolicyPostureChecks(identityId, serviceId str
 	policyTypeSymbol := self.env.GetStores().ServicePolicy.GetSymbol(db.FieldServicePolicyType)
 
 	_ = self.GetDb().View(func(tx *bbolt.Tx) error {
+		if !self.env.GetStores().PostureCheck.IterateIds(tx, ast.BoolNodeTrue).IsValid() {
+			return nil
+		}
+
 		policyCursor := self.env.GetStores().Identity.GetRelatedEntitiesCursor(tx, identityId, db.EntityTypeServicePolicies, true)
 		policyCursor = ast.NewFilteredCursor(policyCursor, func(policyId []byte) bool {
 			return serviceLinks.IsLinked(tx, policyId, []byte(serviceId))