move "has zero" to destroy/hook check up earlier

Author: Jason Murad

lib/query-interface.js

@@ -648,13 +648,14 @@ QueryInterface.prototype.delete = function(instance, tableName, identifier, opti
       transaction: options.transaction,
       logging: options.logging
     }).then(function (instances) {
+      // Check for hasOne relationship with non-existing associate ("has zero")
+      if (!instances) {
+        return Promise.resolve();
+      }
+
       if (!Array.isArray(instances)) instances = [instances];
 
       return Promise.each(instances, function (instance) {
-        if (!instance) {
-          return Promise.resolve();
-        }
-
         return instance.destroy({
           transaction: options.transaction,
           logging: options.logging