Pull request description:
On current master:
```
CXX support/libbitcoin_util_a-lockedpool.o
support/lockedpool.cpp: In member function ‘void Arena::free(void*)’:
support/lockedpool.cpp:99:20: error: ‘runtime_error’ is not a member of ‘std’
99 | throw std::runtime_error("Arena: invalid or double free");
| ^~~~~~~~~~~~~
support/lockedpool.cpp:22:1: note: ‘std::runtime_error’ is defined in header ‘<stdexcept>’; did you forget to ‘#include <stdexcept>’?
21 | #include <algorithm>
+++ |+#include <stdexcept>
22 | #ifdef ARENA_DEBUG
support/lockedpool.cpp: In member function ‘void LockedPool::free(void*)’:
support/lockedpool.cpp:320:16: error: ‘runtime_error’ is not a member of ‘std’
320 | throw std::runtime_error("LockedPool: invalid address not pointing to any arena");
| ^~~~~~~~~~~~~
support/lockedpool.cpp:320:16: note: ‘std::runtime_error’ is defined in header ‘<stdexcept>’; did you forget to ‘#include <stdexcept>’?This is a backport of core#26924