krb5: fix uninitialized variable warning

On some targets clang erroniously detects an uninitialized variable.
Backport the fix from upstream.

Signed-off-by: Daniel McGregor <daniel.mcgregor@vecima.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
(cherry picked from commit 5da9408672)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-connectivity/krb5/krb5/0001-Work-around-uninitialized-warning-in-cc_kcm.c.patch

@@ -0,0 +1,37 @@
+From f1b681a44d28946e6d8fc0080f3efe94228d7dfe Mon Sep 17 00:00:00 2001
+From: Tom Yu <tlyu@mit.edu>
+Date: Wed, 6 Jan 2016 15:24:16 -0500
+Subject: [PATCH] Work around uninitialized warning in cc_kcm.c
+
+Some versions of clang erroneously detect use of an uninitialized
+variable reply_len in kcmio_call() when building on non-Mac platforms.
+Initialize it to work around this warning.
+
+(cherry picked from commit 40b007c0d8e2a12c6f4205ac111dee731c9d970c)
+
+ticket: 8335
+version_fixed: 1.13.4
+tags: -pullup
+status: resolved
+
+Upstream-Status: backport
+---
+ src/lib/krb5/ccache/cc_kcm.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/lib/krb5/ccache/cc_kcm.c b/src/lib/krb5/ccache/cc_kcm.c
+index b763ea4..6337b57 100644
+--- a/src/lib/krb5/ccache/cc_kcm.c
++++ b/src/lib/krb5/ccache/cc_kcm.c
+@@ -377,7 +377,7 @@ static krb5_error_code
+ kcmio_call(krb5_context context, struct kcmio *io, struct kcmreq *req)
+ {
+     krb5_error_code ret;
+-    size_t reply_len;
++    size_t reply_len = 0;
+ 
+     if (k5_buf_status(&req->reqbuf) != 0)
+         return ENOMEM;
+-- 
+2.8.2
+

meta-oe/recipes-connectivity/krb5/krb5_1.13.2.bb

@@ -33,6 +33,7 @@ SRC_URI = "http://web.mit.edu/kerberos/dist/${BPN}/${SHRT_VER}/${BP}-signed.tar
            file://etc/default/krb5-kdc \
            file://etc/default/krb5-admin-server \
            file://krb5-CVE-2016-3119.patch;striplevel=2 \
+           file://0001-Work-around-uninitialized-warning-in-cc_kcm.c.patch;striplevel=2 \
 "
 SRC_URI[md5sum] = "f7ebfa6c99c10b16979ebf9a98343189"
 SRC_URI[sha256sum] = "e528c30b0209c741f6f320cb83122ded92f291802b6a1a1dc1a01dcdb3ff6de1"