skill: Do not scan past the null-terminator in check_proc().

diff --git a/skill.c b/skill.c
index edc42053a57cec1f2b673c9a31e74b018b0cb407..3bc331f67d5f638f6de6d4c195b84d694789a745 100644 (file)
--- a/skill.c
+++ b/skill.c
@@ -209,8 +209,11 @@ static void check_proc(int pid, struct run_time_conf_t *run_time)
        *tmp++ = '\0';
        i = 5;
        while (i--)
-               while (*tmp++ != ' ')
-                       /* scan to find tty */ ;
+               do {
+                       if (!*tmp)
+                               goto closure;
+                       /* scan to find tty */
+               } while (*tmp++ != ' ');
        tty = atoi(tmp);
        if (ttys) {
                i = tty_count;