Check if the call id is valid before cancelling it

1 files changed, 1 insertions, 1 deletions

diff --git a/ratox.c b/ratox.c
index 3f82528..eb07519 100644
--- a/ratox.c
+++ b/ratox.c
@@ -1389,7 +1389,7 @@ frienddestroy(struct friend *f)
 
 	canceltxtransfer(f);
 	cancelrxtransfer(f);
-	if (toxav_get_call_state(toxav, f->av.num) != av_CallNonExistant)
+	if (f->av.num != -1 && toxav_get_call_state(toxav, f->av.num) != av_CallNonExistant)
 		cancelcall(f, "Destroying");
 	for (i = 0; i < LEN(ffiles); i++) {
 		if (f->dirfd != -1) {