This reverts commit 66920a6bace7c54c8166c4ed938b6ffc5fabcf2b.
Some of our bots (Oracle Studio and Apple gcc 4.2) do not allow
explicit except for constructors.
https://github.com/harfbuzz/harfbuzz/issues/1127
We would need to write:
for (Iter<T> it (...); bool (t); t++)
instead of:
for (Iter<T> it (...); t; t++)
But I think it's an improvement in code readability in the long term.
Fixes https://github.com/harfbuzz/harfbuzz/issues/1127
