[OE-core] [PATCH 3/4] libnss-mdns:fix support prerm at image creation time

[Hongxu Jia]

The pkg_prerm_${PN} failed at image creation time because $D is not assigned
as the prefix of "/etc/nsswitch.conf"

[YOCTO #3633]

Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
---
 meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb b/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb
index f7356e4..e9a4128 100644
--- a/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb
+++ b/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb
@@ -7,7 +7,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=2d5025d4aa3495befef8f17206a5b0a1"
 
 DEPENDS = "avahi"
 RDEPENDS_${PN} = "avahi-daemon"
-PR = "r6"
+PR = "r7"
 
 SRC_URI = "http://0pointer.de/lennart/projects/nss-mdns/nss-mdns-${PV}.tar.gz"
 
@@ -30,7 +30,14 @@ pkg_postinst_${PN} () {
 }
 
 pkg_prerm_${PN} () {
+if [ "$D" != "" ]; then
 	sed -e '/^hosts:/s/\s*\<mdns4\>//' \
 		-e '/^hosts:/s/\s*mdns4_minimal\s\+\[NOTFOUND=return\]//' \
-		-i /etc/nsswitch.conf
+		-i $D/etc/nsswitch.conf
+	exit 0
+fi
+
+sed -e '/^hosts:/s/\s*\<mdns4\>//' \
+	-e '/^hosts:/s/\s*mdns4_minimal\s\+\[NOTFOUND=return\]//' \
+	-i /etc/nsswitch.conf
 }
-- 
1.7.10.4