Fix Caps Lock LEDs once and for all (#4824)

* Check the size of the SET_REPORT packet

If we have two bytes, that probably means the first is a report ID. The 6KRO interface may or may not have one, but the NKRO interface always does, so we need to check this regardless of whether KEYBOARD_SHARED_EP is defined.

* Fix indentation

tmk_core/protocol/lufa/lufa.c

@@ -517,17 +517,20 @@ void EVENT_USB_Device_ControlRequest(void)
                         if (USB_DeviceState == DEVICE_STATE_Unattached)
                           return;
                     }
-#ifdef KEYBOARD_SHARED_EP
+
+                    if (Endpoint_BytesInEndpoint() == 2) {
                       uint8_t report_id = REPORT_ID_KEYBOARD;
+
                       if (keyboard_protocol) {
                         report_id = Endpoint_Read_8();
                       }
+
                       if (report_id == REPORT_ID_KEYBOARD || report_id == REPORT_ID_NKRO) {
                         keyboard_led_stats = Endpoint_Read_8();
                       }
-#else
+                    } else {
                       keyboard_led_stats = Endpoint_Read_8();
-#endif
+                    }
 
                     Endpoint_ClearOUT();
                     Endpoint_ClearStatusStage();