xkb: don't call atoi(NULL) when parsing argv

If the -ardelay or -arinterval options have no argument, there's no
point trying to read it.

See
http://www.forallsecure.com/bug-reports/feb3db57fc206d8df22ca53a6907f74973876272/

Reported-by: Alexandre Rebert <alexandre@cmu.edu>
Signed-off-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/xkb/xkbInit.c b/xkb/xkbInit.c
index 5308a29..f72655f 100644 (file)
--- a/xkb/xkbInit.c
+++ b/xkb/xkbInit.c
@@ -759,13 +759,15 @@ XkbProcessArguments(int argc, char *argv[], int i)
     if ((strcmp(argv[i], "-ardelay") == 0) || (strcmp(argv[i], "-ar1") == 0)) { /* -ardelay int */
         if (++i >= argc)
             UseMsg();
-        XkbDfltRepeatDelay = (long) atoi(argv[i]);
+        else
+            XkbDfltRepeatDelay = (long) atoi(argv[i]);
         return 2;
     }
     if ((strcmp(argv[i], "-arinterval") == 0) || (strcmp(argv[i], "-ar2") == 0)) {      /* -arinterval int */
         if (++i >= argc)
             UseMsg();
-        XkbDfltRepeatInterval = (long) atoi(argv[i]);
+        else
+            XkbDfltRepeatInterval = (long) atoi(argv[i]);
         return 2;
     }
     return 0;