Simplification

app/src/main/java/eu/faircode/email/WebViewEx.java

@@ -298,7 +298,7 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
 
     private float lastX;
     private float lastY;
-    private Integer lastXoff;
+    private int lastXoff;
 
     @Override
     public boolean onTouchEvent(MotionEvent event) {
@@ -316,26 +316,20 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
                 intercept = (yoff > 0 || dy >= 0) && (yoff < bottom || dy <= 0);
             }
 
-            if (intercept)
-                lastXoff = computeHorizontalScrollOffset();
-            else {
             int xrange = computeHorizontalScrollRange();
             int xextend = computeHorizontalScrollExtent();
             boolean canScrollHorizontal = (xrange > xextend);
-                //Log.i("MMM xrange=" + xrange + " xextend=" + xextend + " can=" + canScrollHorizontal);
             if (canScrollHorizontal) {
                 int right = xrange - xextend;
                 int xoff = computeHorizontalScrollOffset();
-                    if (lastXoff == null)
+                int ldx = xoff - lastXoff;
-                        lastXoff = xoff;
                 float dx = lastX - event.getX();
                 intercept = (xoff > 0 || dx >= 0) &&
                         (xoff < right || dx <= 0) &&
-                            (Math.signum(dx) == Math.signum(xoff - lastXoff));
+                        (Math.signum(dx) == Math.signum(ldx));
                 lastXoff = xoff;
             }
         }
-        }
         getParent().requestDisallowInterceptTouchEvent(intercept || event.getPointerCount() > 1);
 
         lastX = event.getX();