Don't update flight config on multi-selection in table

swing/src/net/sf/openrocket/gui/main/flightconfigpanel/FlightConfigurablePanel.java

@@ -150,6 +150,11 @@ public abstract class FlightConfigurablePanel<T extends FlightConfigurableCompon
 					return;
 				}
 
+				// Don't update the flight configuration for multi-selections
+				if (table.getSelectionModel().getSelectedItemsCount() > 1) {
+					return;
+				}
+
 				/* Find the selected row and set it as the current selected configuration
 				 * for the rocket. This will propagate the event to ensure that other
 				 * pieces of the UI are updated and match the table selection.