WIP #12: Add API to query connection between vessel nodes (whoops, sh…

…ould have tested first!)

src/com/brindyblitz/artemis/engconsole/BaseEngineeringConsoleManager.java

@@ -36,6 +36,7 @@ public BaseEngineeringConsoleManager() {
 			}
 		}
 
+		this.gridConnections = new ArrayList<>();
 		Iterator<VesselNodeConnection> connectionIterator = vessel.getInternals().connectionIterator();
 		while(connectionIterator.hasNext()) {
 			gridConnections.add(connectionIterator.next());