call zoomToMaxExtent only if the ArgParser didn't center the map itself, examples only change, thanks cmoullet for catching this

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11513 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

examples/controls.html

@@ -25,7 +25,6 @@
                     numZoomLevels: 6
                     
                 });
-    
 
                 var ol_wms = new OpenLayers.Layer.WMS(
                     "OpenLayers WMS",
@@ -49,7 +48,10 @@
                 );
 
                 map.addLayers([ol_wms, gwc, dm_wms]);
-                map.zoomToMaxExtent();
+
+                if (!map.getCenter()) {
+                    map.zoomToMaxExtent();
+                }
             }
         </script>
     </head>