skip test on Informix

Author: gavinking

hibernate-core/src/test/java/org/hibernate/orm/test/hql/QueryComparingAssociationToNullTest.java

@@ -8,6 +8,7 @@
 
 import org.hibernate.community.dialect.DerbyDialect;
 
+import org.hibernate.community.dialect.InformixDialect;
 import org.hibernate.testing.orm.junit.DomainModel;
 import org.hibernate.testing.orm.junit.JiraKey;
 import org.hibernate.testing.orm.junit.SessionFactory;
@@ -31,7 +32,8 @@
 )
 @SessionFactory
 @JiraKey("HHH-16974")
-@SkipForDialect( dialectClass = DerbyDialect.class, reason = "it does not like `= null`")
+@SkipForDialect( dialectClass = DerbyDialect.class, reason = "it does not like '= null'")
+@SkipForDialect( dialectClass = InformixDialect.class, reason = "it does not like '= null'")
 public class QueryComparingAssociationToNullTest {
 
 	@Test