libgit2: upgrade 1.4.2 -> 1.4.3

Changelog:
=========
Validate repository directory ownership (v1.4)
midx: Fix an undefined behavior (left-shift signed overflow)
fetch: support OID refspec without dst
Fix crash when regenerating a patch with unquoted spaces in filename

(From OE-Core rev: bef09c61ee32df214fb8cf6000e0314ff3a38156)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libgit2/libgit2_1.4.3.bb

@@ -0,0 +1,22 @@
+SUMMARY = "the Git linkable library"
+HOMEPAGE = "http://libgit2.github.com/"
+LICENSE = "GPL-2.0-with-GCC-exception & MIT & OpenSSL"
+LIC_FILES_CHKSUM = "file://COPYING;md5=e5a9227de4cb6afb5d35ed7b0fdf480d"
+
+DEPENDS = "curl openssl zlib libssh2 libgcrypt libpcre2"
+
+SRC_URI = "git://github.com/libgit2/libgit2.git;branch=maint/v1.4;protocol=https"
+SRCREV = "465bbf88ea939a965fbcbade72870c61f815e457"
+
+S = "${WORKDIR}/git"
+
+inherit cmake
+
+EXTRA_OECMAKE = "\
+    -DBUILD_CLAR=OFF \
+    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+    -DLIB_INSTALL_DIR=${libdir} \
+    -DREGEX_BACKEND='pcre2' \
+"
+
+BBCLASSEXTEND = "native"