$OpenBSD$
--- plugins/popen.c.orig	Wed Apr 12 20:42:46 2006
+++ plugins/popen.c	Wed Apr 12 20:42:48 2006
@@ -268,9 +268,10 @@ popen_sigchld_handler (int signo)
 RETSIGTYPE
 popen_timeout_alarm_handler (int signo)
 {
-	int fh;
+	int fh = -1;
 	if (signo == SIGALRM) {
-		fh=fileno (child_process);
+		if (child_process)
+			fh=fileno (child_process);
 		if(fh >= 0){
 			kill (childpid[fh], SIGKILL);
 		}