[CodeIssues] Don't consider empty catches redundant.

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

@@ -125,7 +125,7 @@ namespace ICSharpCode.NRefactory.CSharp.Refactoring
 			{
 				var firstStatement = catchClause.Body.Statements.FirstOrNullObject();
 				if (firstStatement.IsNull) {
-					return true;
+					return false;
 				}
 				var throwStatement = firstStatement as ThrowStatement;
 				if (throwStatement == null) {

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

@@ -152,11 +152,7 @@ class A
 }";
 			TestRefactoringContext context;
 			var issues = GetIssues(new RedundantCatchIssue(), input, out context);
-			Assert.AreEqual(1, issues.Count);
-			
-			CheckFix(context, issues, BaseInput + @"
-	}
-}");
+			Assert.AreEqual(0, issues.Count);
 		}
 		
 		[Test]