message: Correct comment in this SPSC test as a quick follow up to merge.
diff: @@ -141,7 +141,8 @@ void SPSCTests::DropDifferentRevolutionTest()
  // At this point we emplace()d 8 items and pop()ed 3 in a channel with a capacity of 5.
  // Both producer and consumer positions will be 3 and only differ in their revolution flag.
  - // This ensures that the arc<T> destructor works even if
  + // This ensures that the arc<T> destructor works even if the
  + // two positions within the circular buffer are identical (modulo the capacity).
  drop(tx);
  VERIFY_ARE_EQUAL(counter, 3);
  