package/babeld: bump to version 1.13.1

- Implemented the per-interface option "probe-mtu", which automatically
  discards links with a mis-configured MTU.
- Fixed a typo in the handing of the option "v4viav6".

Release notes:
https://github.com/jech/babeld/blob/master/CHANGES

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/babeld/0001-Fix-uclibc-build-issue.patch

@@ -0,0 +1,38 @@
+From f8e5fbb33690b516b8516590def5136e6619de4c Mon Sep 17 00:00:00 2001
+From: Dario Binacchi <dario.binacchi@amarulasolutions.com>
+Date: Tue, 17 Sep 2024 21:48:01 +0200
+Subject: [PATCH] Fix uclibc build issue
+
+This patch fixes the following compilation error raised by the bump to
+version 1.13.1 in Buildroot [1] using uclibc as the C library for the
+cross-compilation toolchain:
+
+net.c: In function 'babel_send':
+net.c:199:27: error: 'IPV6_DONTFRAG' undeclared (first use in this function)
+  199 |         cmsg->cmsg_type = IPV6_DONTFRAG;;
+
+[1] https://patchwork.ozlabs.org/project/buildroot/patch/20240917201030.11583-1-dario.binacchi@amarulasolutions.com/
+Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
+Upstream: https://github.com/jech/babeld/pull/121
+---
+ net.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/net.c b/net.c
+index 7a7b57844e6c..30de3dafe1d9 100644
+--- a/net.c
++++ b/net.c
+@@ -37,6 +37,10 @@ THE SOFTWARE.
+ #include <arpa/inet.h>
+ #include <errno.h>
+ 
++#if defined(__UCLIBC__)
++#include <linux/in6.h>
++#endif
++
+ #include "babeld.h"
+ #include "util.h"
+ #include "net.h"
+-- 
+2.43.0
+

package/babeld/babeld.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  d085ccccfb06a11d7fa5b54c51d9c410f5f3b0a9389f584951336ff178f293b8  babeld-1.13.tar.gz
+sha256  15f24d26da0ccfc073abcdef0309f281e4684f2aa71126f826572c4c845e8dd9  babeld-1.13.1.tar.gz
 sha256  b415c41292cedef6c97b243609e50552887c29343566c639f23282d31efd2afd  LICENCE

package/babeld/babeld.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-BABELD_VERSION = 1.13
+BABELD_VERSION = 1.13.1
 BABELD_SITE = https://www.irif.fr/~jch/software/files
 BABELD_LICENSE = MIT
 BABELD_LICENSE_FILES = LICENCE