Fix wallpaper on Windows

fetch.sh

@@ -621,16 +621,18 @@ getwallpaper () {
             img=${img%*\'}
         ;;
 
+        "Windows")
+            case "$distro" in
                 "Windows XP")
-            img="C:/Documents\ and\ Settings/${USER}/Local\ Settings/Application\ Data/Microsoft/Wallpaper1.bmp"
+                    cd c: || wall="off"
+                    img="Documents\ and\ Settings/${USER}/Local\ Settings/Application\ Data/Microsoft/Wallpaper1.bmp"
+                    cd - >/dev/null
                 ;;
 
-        "Windows 7"|"Windows 8"|"Windows 8.1"|"Windows 10")
+                "Windows"*)
                     img="%AppData%/Microsoft/Windows/Themes/TranscodedWallpaper.jpg"
                 ;;
-
-        *)
-            wall="off"
+            esac
         ;;
     esac
 }