[yocto][meta-gplv2][PATCH 2/2 v2] diffutils: musl has working malloc() and realloc()

["Andr? Draszik" <git@andred.net>]

diffutils tries to run a test program to determine if
malloc() and realloc() work, i.e. whether they fail if
given 0 for size. running a test program doesn't work
when cross-compiling, so it defaults to assuming non-
working malloc() / realloc()

Given they work correctly in musl, we can specify the
test-result, and avoid having to use diffutil's
replacement functions.

Signed-off-by: André Draszik <git@andred.net>

---
v2:
* switch to CACHED_CONFIGUREVARS instead of EXTRA_OECONF
---
 recipes-extended/diffutils/diffutils_2.8.1.bb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/recipes-extended/diffutils/diffutils_2.8.1.bb b/recipes-extended/diffutils/diffutils_2.8.1.bb
index 4aad28f..680911b 100644
--- a/recipes-extended/diffutils/diffutils_2.8.1.bb
+++ b/recipes-extended/diffutils/diffutils_2.8.1.bb
@@ -16,6 +16,11 @@ SRC_URI = "${GNU_MIRROR}/diffutils/diffutils-${PV}.tar.gz \
 SRC_URI[md5sum] = "71f9c5ae19b60608f6c7f162da86a428"
 SRC_URI[sha256sum] = "c5001748b069224dd98bf1bb9ee877321c7de8b332c8aad5af3e2a7372d23f5a"
 
+CACHED_CONFIGUREVARS_libc-musl = "\
+    jm_cv_func_working_malloc=yes \
+    jm_cv_func_working_realloc=yes \
+"
+
 do_configure_prepend () {
 	chmod u+w ${S}/po/Makefile.in.in
 }
-- 
2.23.0.rc1