Getting rid of global yRestriction in Map.js (thanks jorix for the report).

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11664 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -1685,7 +1685,8 @@ OpenLayers.Map = OpenLayers.Class({
         var x = hw + dx;
         var y = hh + dy;
         var wrapDateLine = this.baseLayer.wrapDateLine;
-        var xRestriction = yRestriction = 0;
+        var xRestriction = 0;
+        var yRestriction = 0;
         if (this.restrictedExtent) {
             xRestriction = hw;
             yRestriction = hh;