change the default cursor for vector features from "" to "inherit" because FF3 complains about "". r=pgiraud (closes #1595)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@7395 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Feature/Vector.js

@@ -315,7 +315,7 @@ OpenLayers.Feature.Vector.style = {
         hoverPointRadius: 1,
         hoverPointUnit: "%",
         pointerEvents: "visiblePainted",
-        cursor: ""
+        cursor: "inherit"
     },
     'select': {
         fillColor: "blue",
@@ -351,6 +351,6 @@ OpenLayers.Feature.Vector.style = {
         hoverPointRadius: 1,
         hoverPointUnit: "%",
         pointerEvents: "visiblePainted",
-        cursor: ""
+        cursor: "inherit"
     }
 };