ne2000 buffer fulness fix (Han Zhu)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1924 c046a42c-6fe2-441c-8c8c-71466251a162

hw/ne2000.c

@@ -206,7 +206,7 @@ static int ne2000_buffer_full(NE2000State *s)
 
     index = s->curpag << 8;
     boundary = s->boundary << 8;
-    if (index < boundary)
+    if (index <= boundary)
         avail = boundary - index;
     else
         avail = (s->stop - s->start) - (index - boundary);