WebGLRenderer: Testing device.isPresenting instead.

src/renderers/WebGLRenderer.js

@@ -1027,7 +1027,7 @@ function WebGLRenderer( parameters ) {
 
 		var device = vr.getDevice();
 		
-		if ( device && device.isConnected ) {
+		if ( device && device.isPresenting ) {
 
 			device.requestAnimationFrame( loop );
 
@@ -1047,7 +1047,7 @@ function WebGLRenderer( parameters ) {
 
 		var device = vr.getDevice();
 		
-		if ( device && device.isConnected ) {
+		if ( device && device.isPresenting ) {
 
 			device.requestAnimationFrame( loop );