fixes msssql only error when no order by but has offset or limit present (#6181)

* fixes msssql only error when no order by but has offset or limit present

* added a test for my fix

* removed unneeded if & used proper quoteTable method for mssql only fix

lib/dialects/mssql/query-generator.js

@@ -685,7 +685,7 @@ var QueryGenerator = {
     if (options.limit || options.offset) {
       if (!options.order || (options.include && !orders.subQueryOrder.length)) {
         fragment += (options.order && !isSubQuery) ? ', ' : ' ORDER BY ';
-        fragment += this.quoteIdentifier(model.primaryKeyField);
+        fragment += this.quoteTable(model.name) + '.' + this.quoteIdentifier(model.primaryKeyField);
       }
 
       if (options.offset || options.limit) {

test/unit/sql/offset-limit.test.js

@@ -26,6 +26,14 @@ suite(Support.getTestDialectTeaser('SQL'), function() {
     };
 
     testsql({
+      limit: 10,//when no order by present, one is automagically prepended, test it's existence
+      model:{primaryKeyField:'id', name:'tableRef'}
+    }, {
+      default: ' LIMIT 10',
+      mssql: ' ORDER BY [tableRef].[id] OFFSET 0 ROWS FETCH NEXT 10 ROWS ONLY'
+    });
+
+    testsql({
       limit: 10,
       order: [
         ['email', 'DESC'] // for MSSQL