musl: prevent errors if do_install is run more than once

(From OE-Core rev: 3d4c1e0d94175f8c782e94725d365e5e1d1178c1)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/musl/musl_git.bb

@@ -57,10 +57,11 @@ do_install() {
 	oe_runmake install DESTDIR='${D}'
 
 	install -d ${D}${bindir}
+	rm -f ${D}${bindir}/ldd
 	lnr ${D}${libdir}/libc.so ${D}${bindir}/ldd
 	for l in crypt dl m pthread resolv rt util xnet
 	do
-		ln -s libc.so ${D}${libdir}/lib$l.so
+		ln -sf libc.so ${D}${libdir}/lib$l.so
 	done
 }