[monop] Fix NullReferenceException in monop

Fix a NullReferenceException in monop when printing a type name in a
namespace somewhere below System while working on a class which does not
have a namespace.

diff --git a/mcs/tools/monop/outline.cs b/mcs/tools/monop/outline.cs
index 1e1dc25ae6d3f75dfbe02b9f8860b0a55acae1bb..5a97797c95b078efdd8f437f8fabf438eaebc568 100644 (file)
--- a/mcs/tools/monop/outline.cs
+++ b/mcs/tools/monop/outline.cs
@@ -696,7 +696,7 @@ public class Outline {
                // automatically get the namespace imported by virtue of the
                // namespace {} block.
                //      
-               if (this.t.Namespace.StartsWith (t.Namespace + ".") || t.Namespace == this.t.Namespace)
+               if (this.t.Namespace != null && (this.t.Namespace.StartsWith (t.Namespace + ".") || t.Namespace == this.t.Namespace))
                        return type.Substring (t.Namespace.Length + 1);
        
                return type;