coverity: handle case where we didn't get enough place in getopt string

While not currently possible, it may become possible in the future to
forget to allocate enough place in getopt specification string to add
protocols.

diff --git a/src/daemon/lldpd.c b/src/daemon/lldpd.c
index 2c143cd43b9457d3f0508ebd25cd9d8f52578fd2..7be728e453edad825f7bda672adfc5afb4464ecd 100644 (file)
--- a/src/daemon/lldpd.c
+++ b/src/daemon/lldpd.c
@@ -1292,7 +1292,9 @@ lldpd_main(int argc, char *argv[], char *envp[])
         * Get and parse command line options
         */
        popt = strchr(opts, '@');
-       for (i=0; protos[i].mode != 0; i++)
+       for (i=0;
+            protos[i].mode != 0 && popt && *popt != '\0';
+            i++)
                *(popt++) = protos[i].arg;
        *popt = '\0';
        while ((ch = getopt(argc, argv, opts)) != -1) {