Fix SIGSEGV crash in slirp networking code

Fix SIGSEGV crash in networking code (bug was introduced in r6288).
Thanks to Gleb Natapov for finding this fix.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6545 c046a42c-6fe2-441c-8c8c-71466251a162

slirp/ip_input.c

@@ -392,8 +392,7 @@ insert:
 	 * into the new buffer.
 	 */
 	if (m->m_flags & M_EXT) {
-	  int delta;
-	  delta = (char *)ip - m->m_dat;
+	  int delta = (char *)q - m->m_dat;
 	  q = (struct ipasfrag *)(m->m_ext + delta);
 	}