Æthelred Kerman

[eggrobin]

Fix #1452.

[gbesacier]

This commit is the soruce of a NPE when accepting a contract to rescue a Kerbal from the surface of a body (which spawn the Kerbal directly in EVA).
I0711 22:07:56.336668 4520 plugin.cpp:1094] principia::ksp_plugin::internal_plugin::Plugin::ReadFromMessage @ 000007FEE10E5139 google::LogMessageFatal::~LogMessageFatal [0x000007FEE10E5138+104] (\google\glog\src\logging.cc:2034) @ 000007FEE102F03B principia__LogFatal [0x000007FEE102F03A+122] (\principia\ksp_plugin\interface.cpp:636) @ 0000000022C52F5D (No symbol) [0x0000000022C52F5C] F0711 22:08:12.940775 7488 interface.cpp:636] System.NullReferenceException: Object reference not set to an instance of an object at principia.ksp_plugin_adapter.PrincipiaPluginAdapter.UnmanageabilityReasons (.Vessel vessel) [0x00000] in <filename unknown>:0 at principia.ksp_plugin_adapter.PrincipiaPluginAdapter+<AdvanceAndNudgeVesselsAfterPhysicsSimulation>d__93.MoveNext () [0x00000] in <filename unknown>:0

Fixed with this:
if (vessel.isEVA && (vessel.evaController == null || !vessel.evaController.Ready)) {