Include missing in Windows build

for the std::min we need the header <algorithm>

Change-Id: I83d815e1fe8a7221c0eade58df5af887d5a9795a
Reviewed-on: https://gerrit.libreoffice.org/15921Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

i18npool/source/breakiterator/breakiterator_th.cxx

@@ -21,6 +21,7 @@
 #include <wtt.h>
 
 #include <string.h>
+#include <algorithm>
 
 using namespace ::com::sun::star::uno;
 using namespace ::com::sun::star::lang;