LoggingTests: Fix test brittleness.

(cherry picked from commit a2e4891)

Author: oskarb

src/NHibernate.Test/Linq/LoggingTests.cs

@@ -47,9 +47,9 @@ public void CanLogLinqExpressionWithoutInitializingContainedProxy()
 				// Verify that the expected logging did happen.
 				var actualLog = logspy.GetWholeLog();
 
-				const string expectedLog =
-					"Expression (partially evaluated): value(NHibernate.Linq.NhQueryable`1[NHibernate.DomainModel.Northwind.Entities.Product])" + 
-					".Where(product => (product == Product#1)).Count()";
+				string expectedLog =
+					"Expression (partially evaluated): value(NHibernate.Linq.NhQueryable`1[NHibernate.DomainModel.Northwind.Entities.Product])" +
+					".Where(product => (product == Product#" + productId + ")).Count()";
 				Assert.That(actualLog, Is.StringContaining(expectedLog));
 
 				// And verify that the proxy in the expression wasn't initialized.