support: Handle AF_LOCAL, AF_UNSPEC in support_format_address_family

ChangeLog

@@ -1,3 +1,8 @@
+2019-02-01  Florian Weimer  <fweimer@redhat.com>
+
+	* support/support_format_address_family.c
+	(support_format_address_family): Handle AF_LOCAL, AF_UNSPEC.
+
 2019-02-01  Florian Weimer  <fweimer@redhat.com>
 
 	* manual/socket.texi (Internet Address Formats): Clarify the byte

support/support_format_address_family.c

@@ -29,6 +29,10 @@ support_format_address_family (int family)
       return xstrdup ("INET");
     case AF_INET6:
       return xstrdup ("INET6");
+    case AF_LOCAL:
+      return xstrdup ("LOCAL");
+    case AF_UNSPEC:
+      return xstrdup ("UNSPEC");
     default:
       return xasprintf ("<unknown address family %d>", family);
     }