Catch poll zero

Author: photonstorm

src/input/InputPlugin.js

@@ -547,7 +547,13 @@ var InputPlugin = new Class({
             return false;
         }
 
-        if (this.pollRate > 0)
+        var rate = this.pollRate;
+
+        if (rate === -1)
+        {
+            return false;
+        }
+        else if (rate > 0)
         {
             this._pollTimer -= delta;
 
@@ -562,10 +568,6 @@ var InputPlugin = new Class({
                 return false;
             }
         }
-        else
-        {
-            return false;
-        }
 
         //  We got this far? Then we should poll for movement
         var manager = this.manager;