ip: fix crash in "ip neigh show"

parse_rtattr() was using tb[] array without initializing it.

Based on patch by Balaji Punnuru <balaji_punnuru@cable.comcast.com>

function                                             old     new   delta
parse_rtattr                                          85     107     +22
print_route                                         1630    1617     -13
print_linkinfo                                       807     794     -13
iproute_get                                          835     822     -13
print_rule                                           680     665     -15
ll_remember_index                                    263     248     -15
print_addrinfo                                      1223    1197     -26
ipaddr_list_or_flush                                1253    1223     -30
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/7 up/down: 22/-125)          Total: -103 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/libiproute/ipneigh.c b/networking/libiproute/ipneigh.c
index 1cd90d7..f572414 100644
--- a/networking/libiproute/ipneigh.c
+++ b/networking/libiproute/ipneigh.c
@@ -110,11 +110,13 @@
 		return 0;
 	if (G_filter.index && G_filter.index != r->ndm_ifindex)
 		return 0;
-	if (!(G_filter.state&r->ndm_state) &&
-	    !(r->ndm_flags & NTF_PROXY) &&
-	    (r->ndm_state || !(G_filter.state & 0x100)) &&
-	    (r->ndm_family != AF_DECnet))
+	if (!(G_filter.state&r->ndm_state)
+	 && !(r->ndm_flags & NTF_PROXY)
+	 && (r->ndm_state || !(G_filter.state & 0x100))
+	 && (r->ndm_family != AF_DECnet)
+	) {
 		return 0;
+	}
 
 	parse_rtattr(tb, NDA_MAX, NDA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));