Fixed bug in redundant field initializer issue.

ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantFieldInitializerIssue.cs

@@ -52,7 +52,8 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			public override void VisitFieldDeclaration (FieldDeclaration fieldDeclaration)
 			{
 				base.VisitFieldDeclaration (fieldDeclaration);
-
+				if (fieldDeclaration.HasModifier (Modifiers.Const))
+					return;
 				var defaultValueExpr = GetDefaultValueExpression (fieldDeclaration.ReturnType);
 				if (defaultValueExpr == null)
 					return;

ICSharpCode.NRefactory.Tests/CSharp/CodeIssues/RedundantFieldInitializerIssueTests.cs

@@ -169,5 +169,14 @@ class TestClass
 }";
 			Test<RedundantFieldInitializerIssue> (input, 1, output);
 		}
+		
+		
+		[Test]
+		public void TestRedundantConstantBug ()
+		{
+			Test<RedundantFieldInitializerIssue> (@"class Test { const int foo = 0;  }", 0);
+		}
+		
+
 	}
 }