autofs-5.0.7 - fix interface address null check

From: Doug Nazar <nazard@nazar.ca>

Since commit aa6f7793 [autofs-5.0.7 - fix ipv6 proximity calculation]
get_proximity() uses getifaddrs however it crashes on interfaces with
no addresses.

Fix the NULL check to ignore interfaces with no addresses.
Also skip interfaces which are not currently running.
---
 CHANGELOG            |    1 +
 modules/replicated.c |   10 ++++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 66c11de..50e83d7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -43,6 +43,7 @@
 - make dump maps check for duplicate indirect mounts.
 - document allowed map sources in auto.master.
 - add enable sloppy mount option to configure.
+- fix interface address null check.
 
 25/07/2012 autofs-5.0.7
 =======================
diff --git a/modules/replicated.c b/modules/replicated.c
index 26f64b8..6dbdade 100644
--- a/modules/replicated.c
+++ b/modules/replicated.c
@@ -165,8 +165,9 @@ static unsigned int get_proximity(struct sockaddr *host_addr)
 
 	this = ifa;
 	while (this) {
-		if (this->ifa_flags & IFF_POINTOPOINT ||
-		    this->ifa_addr->sa_data == NULL) {
+		if (!(this->ifa_flags & IFF_UP) ||
+		    this->ifa_flags & IFF_POINTOPOINT ||
+		    this->ifa_addr == NULL) {
 			this = this->ifa_next;
 			continue;
 		}
@@ -202,8 +203,9 @@ static unsigned int get_proximity(struct sockaddr *host_addr)
 
 	this = ifa;
 	while (this) {
-		if (this->ifa_flags & IFF_POINTOPOINT ||
-		    this->ifa_addr->sa_data == NULL) {
+		if (!(this->ifa_flags & IFF_UP) ||
+		    this->ifa_flags & IFF_POINTOPOINT ||
+		    this->ifa_addr == NULL) {
 			this = this->ifa_next;
 			continue;
 		}