[PATCH] Remove unused variable and microoptimize loop variables

[Wald Commits]

# HG changeset patch
# User Andre Heinecke <andre.heinecke at intevation.de>
# Date 1433777991 -7200
# Node ID c4654863108d5c3237156726f6e4bcdac8bfaf21
# Parent  36d7bda0b47ab7ff847195ed1d758dbb77f14221
Remove unused variable and microoptimize loop variables.

diff -r 36d7bda0b47a -r c4654863108d artifacts/src/main/java/org/dive4elements/river/jfree/StableXYDifferenceRenderer.java
--- a/artifacts/src/main/java/org/dive4elements/river/jfree/StableXYDifferenceRenderer.java	Mon Jun 08 16:53:54 2015 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/jfree/StableXYDifferenceRenderer.java	Mon Jun 08 17:39:51 2015 +0200
@@ -625,9 +625,7 @@
         int N = dataset.getItemCount(0);
         int M = dataset.getItemCount(1);
 
-        int i = 0, j = 0;
-        boolean haveNaN = false;
-        for (; i < N; ++i) {
+        for (int i = 0; i < N; ++i) {
             double x = dataset.getXValue(0, i);
             double y = dataset.getYValue(0, i);
             if (Double.isNaN(x) || Double.isNaN(y)) {
@@ -635,7 +633,7 @@
             }
         }
 
-        for (; j < M; ++j) {
+        for (int j = 0; j < M; ++j) {
             double x = dataset.getXValue(1, j);
             double y = dataset.getYValue(1, j);
             if (Double.isNaN(x) || Double.isNaN(y)) {