Xi: check if source has a key class before copying.
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@ -378,7 +378,7 @@ DeepCopyDeviceClasses(DeviceIntPtr from, DeviceIntPtr to)
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}
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ALLOC_COPY_CLASS_IF(key, KeyClassRec);
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if (to->key)
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if (to->key && from->key)
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{
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#ifdef XKB
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to->key->xkbInfo = NULL;
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