* The reference to the trace is only borrowed since the
* serialization of the stream class might have been triggered
* by the trace's destruction. In such a case, the trace's
- * reference count would, unexepectedly, go through the sequence
+ * reference count would, unexpectedly, go through the sequence
* 1 -> 0 -> 1 -> 0 -> ..., provoking an endless loop of destruction
* and serialization.
*/