Fix sed command parameters

hoodselector/Makefile

@@ -12,7 +12,7 @@ define Package/$(PKG_NAME)
   SECTION:=networke
   CATEGORY:=Freifunk Nordwest
   TITLE:=Select the hoods depending on the geo coordinate
-  DEPENDS:=+lwtrace +libwlocate +ffnw-hoods +dkjson
+  DEPENDS:=+lwtrace +ffnw-hoods +dkjson +gluon-mesh-batman-adv-15 +gluon-mesh-vpn-fastd
 endef
 
 define Package/$(PKG_NAME)/description
@@ -30,7 +30,7 @@ define Build/Compile
 endef
 
 define Package/$(PKG_NAME)/install
-	sed '/[--].*/d' ./files/usr/sbin/hoodselector >> ./files/usr/sbin/hoodselector
+	sed -e 's/--.*//' -e '/^$/d' ./files/usr/sbin/hoodselector > ./files/usr/sbin/hoodselector
 	$(CP) ./files/* $(1)/
 endef