Fix build

Author: bahusoid

src/NHibernate.Test/Async/Criteria/CriteriaQueryTest.cs

@@ -1005,7 +1005,7 @@ public async Task TestSQLProjectionWithAliasesAsync()
 				await (s.Query<Enrolment>().DeleteAsync());
 				await (s.Query<Student>().DeleteAsync());
 				await (s.Query<Course>().DeleteAsync());
-				await (s.Transaction.CommitAsync());
+				await (s.GetCurrentTransaction().CommitAsync());
 			}
 		}
 

src/NHibernate.Test/Criteria/CriteriaQueryTest.cs

@@ -1102,7 +1102,7 @@ public void TestSQLProjectionWithAliases()
 				s.Query<Enrolment>().Delete();
 				s.Query<Student>().Delete();
 				s.Query<Course>().Delete();
-				s.Transaction.Commit();
+				s.GetCurrentTransaction().Commit();
 			}
 		}