Make device close cleaner.

[tinc] / src / cygwin / device.c

diff --git a/src/cygwin/device.c b/src/cygwin/device.c
index a110f7f..d522b4f 100644 (file)
--- a/src/cygwin/device.c
+++ b/src/cygwin/device.c
@@ -215,12 +215,13 @@ static bool setup_device(void) {
 static void close_device(void) {
        close(sp[0]);
        close(sp[1]);
-       CloseHandle(device_handle);
+       CloseHandle(device_handle); device_handle = INVALID_HANDLE_VALUE;
 
        kill(reader_pid, SIGKILL);
 
-       free(device);
-       free(iface);
+       free(device); device = NULL;
+       free(iface); iface = NULL;
+       device_info = NULL;
 }
 
 static bool read_packet(vpn_packet_t *packet) {