Bug 196306 [Commands] RegistryRadioState cannot properly initialize because of NPE
When a RegistryRadioState configured for a contributed command is being read from the registry, an NPE is thrown in RadioState, line 75: private final void activateMember(final RadioState state) { if (active != state) { 75-> active.setValue(Boolean.FALSE); } active = state; } This is because there is no initial active state and no way to provide a non-null value. I believe line 74 should read "if (active != state && active != null) {".
bundles/org.eclipse.jface/src/org/eclipse/jface/commands/RadioState.java
* @param identifier
		 *            The identifier of the radio group; must not be
		 *            <code>null</code>.
		 * @param state
		 *            The state to register; must not be <code>null</code>.
		 */
		private static final void registerState(final String identifier,
				final RadioState state) {
			if (radioStatesById == null) {
				radioStatesById = new HashMap();
			}
			final Object currentValue = radioStatesById.get(identifier);
			final RadioGroup radioGroup;
			if (currentValue instanceof RadioGroup) {
				radioGroup = (RadioGroup) currentValue;
			} else {
				radioGroup = new RadioGroup();
			}
			radioGroup.addMember(state);
		}
		/**
		 * Unregisters a piece of state from the radio manager.
		 * 
		 * @param identifier
		 *            The identifier of the radio group; must not be
		 *            <code>null</code>.
		 * @param state
		 *            The state to unregister; must not be <code>null</code>.
		 */
		private static final void unregisterState(final String identifier,