Backwards memcpy, triggered by changing default page size in hp-toolbox

Index: prnt/cupsext/cupsext.c
--- prnt/cupsext/cupsext.c.orig
+++ prnt/cupsext/cupsext.c
@@ -1226,7 +1226,7 @@ PyObject *removeOption(PyObject *self, PyObject *args)
 
             if (j < g_num_options)
             {
-                memcpy((g_options + j), (g_options + j + 1),
+                memmove((g_options + j), (g_options + j + 1),
                        sizeof(cups_option_t) * (g_num_options - j));
 
                 r = 1;