configure: fix wireshark dissector configure output

Commit 37397320 moved wireshark dissector code to its own file but
forgot to properly update configure.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

configure.ac

@@ -2680,7 +2680,6 @@ LIBVIRT_RESULT_SASL
 LIBVIRT_RESULT_SELINUX
 LIBVIRT_RESULT_SSH2
 LIBVIRT_RESULT_UDEV
-LIBVIRT_RESULT_WIRESHARK
 LIBVIRT_RESULT_YAJL
 AC_MSG_NOTICE([  libxml: $LIBXML_CFLAGS $LIBXML_LIBS])
 AC_MSG_NOTICE([  dlopen: $DLOPEN_LIBS])
@@ -2760,7 +2759,7 @@ AC_MSG_NOTICE([      TLS priority: $with_tls_priority])
 AC_MSG_NOTICE([])
 AC_MSG_NOTICE([Developer Tools])
 AC_MSG_NOTICE([])
-AC_MSG_NOTICE([Wireshark dissector: $with_wireshark_dissector])
+LIBVIRT_RESULT_WIRESHARK
 AC_MSG_NOTICE([])
 AC_MSG_NOTICE([Privileges])
 AC_MSG_NOTICE([])