fix some bash-isms.

CHANGES

@@ -42,6 +42,7 @@
 *
 * --------------------------------------------------------------------
 -pre12
+  - fix some bash-isms in /etc/wlan/shared (Daniel Song)
   - Collapsed the BOUNDEDINT and INT types into one.
   - Eliminated the WLAN_LOG_***0() macros at long last thanks to CPP 
     trickery.  Also eliminated more cruft from wlan_compat.h

THANKS

@@ -104,6 +104,7 @@ Juan Conde <juan.conde@juntadeandalucia.es>
 Ichiro Doi <ichiro@d-o-i.net>
 Jeff Chua <jchua@fedex.com>
 Chris Wilson <chris@qwirx.com>
+Daniel Jiseok Song <jssong@wooritg.com>
 
 [Many, many more.  If I've overlooked you and you want to be listed here, 
 send me e-mail and I'll fix it.  I _know_ a bunch of linux-wlan contributors

etc/wlan/shared

@@ -417,7 +417,7 @@ wlan_wep ()
 			for i in $keys ; do
 				result=`$WLANCTL $1 dot11req_mibset \
 				mibattribute=dot11WEPDefaultKey$knum=$i`
-				knum=$[$knum + 1]
+				knum=`expr $knum + 1`
 			done
 		else 
 			result=`$WLANCTL $1 dot11req_mibset \
@@ -457,13 +457,13 @@ wlan_adhoc ()
 	j=1
 	for i in $BASICRATES ; do
 		startcmd="$startcmd basicrate$j=$i"
-		j=$[j + 1]
+		j=`expr $j + 1`
 		done
 
 	j=1
 	for i in $OPRATES ; do
 		startcmd="$startcmd operationalrate$j=$i"
-		j=$[j + 1]
+		j=`expr $j + 1`
 	done
 
 	results=`$startcmd`	# Here's where it runs
@@ -512,7 +512,7 @@ wlan_dot11_join ()
 	j=1
 	for i in $OPRATES ; do
 		joincmd="$joincmd operationalrate$j=$i"
-		j=$[j + 1]
+		j=`expr $j + 1`
 	done
 
 	results=`$joincmd`