When client closes connection, its isLocalPlayer parameter in OnDestroy method is reset to false.

1. Open attached project ("UnetIsLocalPlayer.zip")
2. Open "scene" scene
3. Hit play
4. Click LAN Host button
5. Click Stop (X) button

Expected result:
"NetworkBehaviour.isLocalPlayer" parameter of local player equals TRUE in OnDestroy method

Actual result:
"NetworkBehaviour.isLocalPlayer" parameter of local player equals FALSE in OnDestroy method (visible in Console output)

Reproduced on: 5.4.1p1, 5.4.3f1, 5.4.3p1, 5.5.0f1, 5.6.0a3
Not reproduced: 5.2.5f1, 5.3.0f4, 5.4.1f1
Regression introduced: 5.4.1p1