Fixed broken unit test.

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs

@@ -2696,6 +2696,15 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 					return new ExpressionResult((AstNode)pref.Target, baseUnit);
 				}
 			}
+
+			if (mref == null) {
+				baseUnit = ParseStub("A a;", false);
+				var type = baseUnit.GetNodeAt<MemberType>(location);
+				if (type != null) {
+					return new ExpressionResult((AstNode)type.Target, baseUnit);
+				}
+			}
+
 			AstNode expr = null;
 			if (mref != null) {
 				expr = mref.Target;

ICSharpCode.NRefactory.Tests/CSharp/CodeCompletion/CodeCompletionBugTests.cs

@@ -827,7 +827,6 @@ class Test
 		/// <summary>
 		/// Bug 405000 - Namespace alias qualifier operator (::) does not trigger code completion
 		/// </summary>
-		[Ignore("GOT BROKEN! FIXME")]
 		[Test]
 		public void TestBug405000 ()
 		{