[PATCH] (2) Compile warning fixes for gcc 2.97

[Byron Stanoszek]

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Here's a set of patches that fix compile warnings using gcc 2.97. The first
patch is purely a syntactical change (mainly removing default: statements that
do nothing), the second is a change in code structure that "looks" correct but
was brought on by the same type of warning where the case label has no effect.

So I split up the patch into two parts so we cna decide to throw out the second
if it is indeed incorrect. The 2nd patch (arp.patch) changes the following code

                switch (dev->type) {
                default:
                        break;
                case ARPHRD_ROSE:
#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
                case ARPHRD_AX25:
#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE)
                case ARPHRD_NETROM:
#endif
                        neigh->ops = &arp_broken_ops;
                        neigh->output = neigh->ops->output;
                        return 0;
#endif
                }

--to this:--

                switch (dev->type) {
                case ARPHRD_ROSE:
#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
                case ARPHRD_AX25:
#endif
#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE)
                case ARPHRD_NETROM:
#endif
                        neigh->ops = &arp_broken_ops;
                        neigh->output = neigh->ops->output;
                        return 0;
                }