net-tools: Override CFLAGS/LDFLAGS in do_install too

do_compile does this but do_install needs same env as well

(From OE-Core rev: 57e4bb197173552706db60a3d82e1dddc0a6b004)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/net-tools/net-tools_1.60-26.bb

@@ -83,6 +83,10 @@ do_compile() {
 }
 
 do_install() {
+	export COPTS="$CFLAGS"
+	export LOPTS="$LDFLAGS"
+	unset CFLAGS
+	unset LDFLAGS
 	oe_runmake 'BASEDIR=${D}' install
 }