Override equals for SwingLane since super class PlotLane defines it

Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

org.eclipse.jgit.ui/src/org/eclipse/jgit/awtui/SwingCommitList.java

@@ -83,5 +83,9 @@ protected void recycleLane(final SwingLane lane) {
 
 	static class SwingLane extends PlotLane {
 		Color color;
+		@Override
+		public boolean equals(Object o) {
+			return super.equals(o) && color.equals(((SwingLane)o).color);
+		}
 	}
 }