Mono-compatability bug fix

HermanSchoenfeld · HermanSchoenfeld · commit 62b013608560 · 2012-12-05T19:14:34.000+10:00
Mono-compatability bug fix -- HashSet enumeration returned null for
unknown reason.

This fix was tested on a commercial application using 30+ fluent
mappings. It works now.
diff --git a/src/FluentNHibernate/MappingModel/Collections/LayeredColumns.cs b/src/FluentNHibernate/MappingModel/Collections/LayeredColumns.cs
@@ -21,6 +21,9 @@ public IEnumerable<ColumnMapping> Columns
 
                 foreach (var value in values)
                 {
+					if (value == null)
+						yield break;
+
                     yield return value;
                 }
             }

Original file line number	Diff line number	Diff line change
`@@ -21,6 +21,9 @@ public IEnumerable<ColumnMapping> Columns`
`21`	`21`
`22`	`22`	`foreach (var value in values)`
`23`	`23`	`{`
	`24`	`+ if (value == null)`
	`25`	`+ yield break;`
	`26`	`+`
`24`	`27`	`yield return value;`
`25`	`28`	`}`
`26`	`29`	`}`