Reported by Jonny Grant.
libstdc++-v3/ChangeLog:
* include/bits/allocator.h: Fix typo in comment.
// Since C++20 the primary template should be used for allocator<void>,
// but then it would have a non-trivial default ctor and dtor for C++20,
- // but trivial for C++98-17, which would be an ABI incompatibiliy between
+ // but trivial for C++98-17, which would be an ABI incompatibility between
// different standard dialects. So C++20 still uses the allocator<void>
// explicit specialization, with the historical ABI properties, but with
// the same members that are present in the primary template.