Remove index parameter null check
diff --git a/bundles/org.eclipse.rap.nebula.widgets.grid/src/org/eclipse/nebula/widgets/grid/internal/gridkit/GridLCA.java b/bundles/org.eclipse.rap.nebula.widgets.grid/src/org/eclipse/nebula/widgets/grid/internal/gridkit/GridLCA.java
index 48b5248..0a09d1b 100644
--- a/bundles/org.eclipse.rap.nebula.widgets.grid/src/org/eclipse/nebula/widgets/grid/internal/gridkit/GridLCA.java
+++ b/bundles/org.eclipse.rap.nebula.widgets.grid/src/org/eclipse/nebula/widgets/grid/internal/gridkit/GridLCA.java
@@ -358,10 +358,7 @@
           String detail = request.getParameter( eventName + ".detail" );
           if( "check".equals( detail ) ) {
             String index = request.getParameter( eventName + ".index" );
-            if( index == null ) {
-              index = "0";
-            }
-            item.fireCheckEvent( Integer.valueOf( index ).intValue()  );
+            item.fireCheckEvent( Integer.valueOf( index ).intValue() );
           } else {
             item.fireEvent( SWT.Selection );
           }