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vnc: Set invalid buffer pointers to NULL 

After qemu_free, the pointers for input and output
buffers are no longer valid, so set them to NULL
(most other calls of qemu_free in vnc.c use this
pattern, too).

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Weil 2009-09-19 21:00:09 +02:00 committed by Anthony Liguori
parent 7f1e9d4e13
commit fa0cfdf24a
1 changed files with 8 additions and 2 deletions
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vnc.c
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@ -894,8 +894,14 @@ static void vnc_disconnect_start(VncState *vs)
static void vnc_disconnect_finish(VncState *vs)
{
if (vs->input.buffer) qemu_free(vs->input.buffer);
if (vs->output.buffer) qemu_free(vs->output.buffer);
if (vs->input.buffer) {
qemu_free(vs->input.buffer);
vs->input.buffer = NULL;
}
if (vs->output.buffer) {
qemu_free(vs->output.buffer);
vs->output.buffer = NULL;
}
#ifdef CONFIG_VNC_TLS
vnc_tls_client_cleanup(vs);
#endif /* CONFIG_VNC_TLS */