LibC: Stub out mbsnrtowcs

Author: https://github.com/BertalanD
Commit: 763a69d46d
Pull-request: https://github.com/SerenityOS/serenity/pull/9378
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/itamar8910
Reviewed-by: https://github.com/linusg ✅
Reviewed-by: https://github.com/nico
Reviewed-by: https://github.com/timschumi

Userland/Libraries/LibC/wchar.cpp

@@ -556,4 +556,10 @@ size_t wcsnrtombs(char*, const wchar_t**, size_t, size_t, mbstate_t*)
     dbgln("FIXME: Implement wcsnrtombs()");
     TODO();
 }
+
+size_t mbsnrtowcs(wchar_t*, const char**, size_t, size_t, mbstate_t*)
+{
+    dbgln("FIXME: Implement mbsnrtowcs()");
+    TODO();
+}
 }

Userland/Libraries/LibC/wchar.h

@@ -62,5 +62,6 @@ size_t wcsrtombs(char*, const wchar_t**, size_t, mbstate_t*);
 size_t mbsrtowcs(wchar_t*, const char**, size_t, mbstate_t*);
 int wmemcmp(const wchar_t*, const wchar_t*, size_t);
 size_t wcsnrtombs(char*, const wchar_t**, size_t, size_t, mbstate_t*);
+size_t mbsnrtowcs(wchar_t*, const char**, size_t, size_t, mbstate_t*);
 
 __END_DECLS