First check for arguments before even getting an IP address

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10110 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/adm5120/router_le/base-files/sbin/wget2nand

@@ -13,17 +13,18 @@
 	exit 1
 }
 
-# first get an address for br-lan using udhcpc
-killall udhcpc
-/sbin/udhcpc -i br-lan
-
 # need to find the wget server from the command line
 url=$1
 [ -z "$url" ] && {
-	echo "No URL specified for image TGZ"
-	echo "Usage : $0 URL"
-	exit 1
-} 
+        echo "No URL specified for image TGZ"
+        echo "Usage : $0 URL"
+        exit 1
+}
+
+
+# first get an address for br-lan using udhcpc
+killall udhcpc
+/sbin/udhcpc -i br-lan
 
 boot="$(find_mtd_part 'RouterBoard NAND Boot')"
 main="$(find_mtd_part 'rootfs')"