dev-libs/cJSON: Drop -Werror

Closes: https://bugs.gentoo.org/781614
Signed-off-by: Matt Turner <mattst88@gentoo.org>

dev-libs/cJSON/cJSON-1.7.14.ebuild

@@ -1,4 +1,4 @@
-# Copyright 2020 Gentoo Authors
+# Copyright 2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -15,6 +15,12 @@ KEYWORDS="~amd64"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
+src_prepare() {
+	cmake_src_prepare
+
+	sed -i -e '/-Werror/d' CMakeLists.txt || die
+}
+
 src_configure() {
 	local mycmakeargs=(
 		-DENABLE_CJSON_TEST=$(usex test)