pmt: revert 7f8090b

include/libgnulib/wcsrchr-impl.h

@@ -1,33 +0,0 @@
-/* Search wide string for a wide character.
-   Copyright (C) 1999, 2011-2024 Free Software Foundation, Inc.
-   Written by Bruno Haible <bruno@clisp.org>, 1999.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation, either version 3 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-wchar_t *
-wcsrchr (const wchar_t *wcs, wchar_t wc)
-{
-  /* Calling wcslen and then searching from the other end would cause more
-     memory accesses.  Avoid that, at the cost of a few more comparisons.  */
-  wchar_t *result = NULL;
-
-  for (;; wcs++)
-    {
-      if (*wcs == wc)
-        result = (wchar_t *) wcs;
-      if (*wcs == (wchar_t)'\0')
-        break;
-    }
-  return result;
-}