Ignore CAP END when received multiple times

This fixes a segfault when CAP END was received after the capabilty
negotiation was already over.

1 files changed, 3 insertions, 0 deletions

diff --git a/irc_cap.c b/irc_cap.c
index 42f70529..af1215e0 100644
--- a/irc_cap.c
+++ b/irc_cap.c
@@ -176,6 +176,9 @@ void irc_cmd_cap(irc_t *irc, char **cmd)
 		irc_send_cap(irc, ack ? "ACK" : "NAK", cmd[2] ? : "");
 
 	} else if (g_strcasecmp(cmd[1], "END") == 0) {
+		if (!(irc->status & USTATUS_CAP_PENDING)) {
+			return;
+		}
 		irc->status &= ~USTATUS_CAP_PENDING;
 
 		if (irc->status & USTATUS_SASL_PLAIN_PENDING) {