vnc: Wrap vnc initialization code with CONFIG_VNC

commit f8c75b2486 (vnc: Initialization stubs) removed CONFIG_VNC in vl.c
code. However qemu_find_opts("vnc") is NULL when vnc is configured out.
Crash will happen in qemu_opts_foreach() before stub vnc_init_func() is
called. This patch add it back.

Cc: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

diff --git a/vl.c b/vl.c
index 0736d84..2f63eb4 100644 (file)
--- a/vl.c
+++ b/vl.c
@@ -4564,8 +4564,10 @@ int main(int argc, char **argv, char **envp)
     os_setup_signal_handling();
 
     /* init remote displays */
+#ifdef CONFIG_VNC
     qemu_opts_foreach(qemu_find_opts("vnc"),
                       vnc_init_func, NULL, NULL);
+#endif
     if (show_vnc_port) {
         char *ret = vnc_display_local_addr("default");
         printf("VNC server running on '%s'\n", ret);