LibC: Stub out wcstoull

Userland/Libraries/LibC/wchar.cpp

@@ -423,4 +423,10 @@ unsigned long wcstoul(const wchar_t*, wchar_t**, int)
     dbgln("TODO: Implement wcstoul()");
     TODO();
 }
+
+unsigned long long wcstoull(const wchar_t*, wchar_t**, int)
+{
+    dbgln("TODO: Implement wcstoull()");
+    TODO();
+}
 }

Userland/Libraries/LibC/wchar.h

@@ -48,5 +48,6 @@ wchar_t* wmemcpy(wchar_t*, const wchar_t*, size_t);
 wchar_t* wmemset(wchar_t*, wchar_t, size_t);
 wchar_t* wmemmove(wchar_t*, const wchar_t*, size_t);
 unsigned long wcstoul(const wchar_t*, wchar_t**, int);
+unsigned long long wcstoull(const wchar_t*, wchar_t**, int);
 
 __END_DECLS