Removing unnecessary add an empty string

Change-Id: Ib028b9c74f381d5e745d4056c41537d8cb4721b5
diff --git a/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/progress/client/ProgressBar.java b/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/progress/client/ProgressBar.java
index 5e13f55..931e84e 100644
--- a/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/progress/client/ProgressBar.java
+++ b/gerrit-gwtexpui/src/main/java/com/google/gwtexpui/progress/client/ProgressBar.java
@@ -71,7 +71,7 @@
   public void setValue(final int pComplete) {
     assert 0 <= pComplete && pComplete <= 100;
     value = pComplete;
-    bar.setWidth("" + (2 * pComplete) + "px");
+    bar.setWidth(2 * pComplete + "px");
     msg.setText(callerText + pComplete + "%");
   }
 }