canJump is not defined. Added declare canJump

examples/misc_controls_pointerlock.html

@@ -181,6 +181,7 @@
 			var moveBackward = false;
 			var moveLeft = false;
 			var moveRight = false;
+			var canJump = false;
 
 			var prevTime = performance.now();
 			var velocity = new THREE.Vector3();