IOS/Wiimote: keep the source guard under __LIBRETRO__

Source/Core/Core/IOS/USB/Bluetooth/WiimoteDevice.cpp

@@ -453,8 +453,9 @@ void WiimoteDevice::ExecuteL2capCmd(u8* ptr, u32 size)
       m_host->SendACLPacket(GetBD(), reinterpret_cast<const u8*>(&data_frame), sizeof(data_frame));
 
       // Does the wii remote reply on the control or interrupt channel in this situation?
-      // A state restored with more remotes linked than this session has sources.
+#ifdef __LIBRETRO__
       if (IsSourceValid())
+#endif
         m_hid_source->InterruptDataOutput(data + sizeof(hid_type), data_size - sizeof(hid_type));
     }
     else
@@ -469,8 +470,9 @@ void WiimoteDevice::ExecuteL2capCmd(u8* ptr, u32 size)
     const u8 hid_type = data[0];
     if (hid_type == ((WiimoteCommon::HID_TYPE_DATA << 4) | WiimoteCommon::HID_PARAM_OUTPUT))
     {
-      // A state restored with more remotes linked than this session has sources.
+#ifdef __LIBRETRO__
       if (IsSourceValid())
+#endif
         m_hid_source->InterruptDataOutput(data + sizeof(hid_type), data_size - sizeof(hid_type));
     }
     else