muttimage has bashisms

bin/muttimage

@@ -1,8 +1,5 @@
-#! /bin/sh
-
-#### Determine size of Terminal
-height=`stty  size | awk 'BEGIN {FS = " "} {print $1;}'`
-width=`stty  size | awk 'BEGIN {FS = " "} {print $2;}'`
-
+#!/bin/bash
+height=$(stty  size | awk 'BEGIN {FS = " "} {print $1;}')
+width=$(stty  size | awk 'BEGIN {FS = " "} {print $2;}')
 ### Display Image / offset with mutt bar
 echo -e "2;3;\n0;1;210;20;$((width*7-250));$((height*14-100));0;0;0;0;$1\n4;\n3;" |  /usr/lib/w3m/w3mimgdisplay &