typo, repeated conditional test MarkerViewerInterestSorter

Change-Id: I5cd10d0efa4b9be4dd14edca88b9531da64b2217
Signed-off-by: Tomasz Zarna <tomasz.zarna@tasktop.com>
diff --git a/org.eclipse.mylyn.ide.ui/src/org/eclipse/mylyn/internal/ide/ui/MarkerViewerInterestSorter.java b/org.eclipse.mylyn.ide.ui/src/org/eclipse/mylyn/internal/ide/ui/MarkerViewerInterestSorter.java
index 1803670..f9f1383 100644
--- a/org.eclipse.mylyn.ide.ui/src/org/eclipse/mylyn/internal/ide/ui/MarkerViewerInterestSorter.java
+++ b/org.eclipse.mylyn.ide.ui/src/org/eclipse/mylyn/internal/ide/ui/MarkerViewerInterestSorter.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2008 Tasktop Technologies and others.
+ * Copyright (c) 2004, 2013 Tasktop Technologies and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -29,7 +29,7 @@
 
 	@Override
 	public int compare(Viewer viewer, Object obj1, Object obj2) {
-		if (obj1 instanceof ProblemMarker && obj1 instanceof ProblemMarker) {
+		if (obj1 instanceof ProblemMarker && obj2 instanceof ProblemMarker) {
 			ProblemMarker marker1 = (ProblemMarker) obj1;
 			ProblemMarker marker2 = (ProblemMarker) obj2;
 			if (marker1.getSeverity() == IMarker.SEVERITY_ERROR && marker2.getSeverity() < IMarker.SEVERITY_ERROR) {