Merge bitcoin/bitcoin#32562: doc: remove // for ... comments

7193245cd6 doc: remove For ... comments (fanquake)
1b9cdc933f net: drop win32 ifdef (fanquake)
19ba499b1f init: cerrno is used on all platforms (fanquake)

Pull request description:

  We don't add or maintain these, and they are of little value, as
  well as having the effect of polluting diffs, if changed.

  They are also wrong, i.e `DEFAULT_SCRIPTCHECK_THREADS` is not in
  `validation.h`.

ACKs for top commit:
  stickies-v:
    re-ACK 7193245cd6
  fjahr:
    ACK 7193245cd6
  willcl-ark:
    reACK 7193245cd6

Tree-SHA512: 6b5f83cd1df699356e1cbb78949f8d456b13ce288f0064138118cfb45b4c77e2d1945babe91598dffe9823ab07dfae36f4c3b61c586cf98baf16890bdf322b08

src/wallet/test/db_tests.cpp

@@ -11,11 +11,16 @@
 #include <wallet/sqlite.h>
 #include <wallet/migrate.h>
 #include <wallet/test/util.h>
-#include <wallet/walletutil.h> // for WALLET_FLAG_DESCRIPTORS
+#include <wallet/walletutil.h>
 
+#include <cstddef>
 #include <fstream>
 #include <memory>
+#include <span>
 #include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
 
 inline std::ostream& operator<<(std::ostream& os, const std::pair<const SerializeData, SerializeData>& kv)
 {