fixed little issue with fbsetbg showing the warning about missing wpsetters even if the user only pipes arguments towards fbsetroot

ChangeLog

@@ -1,5 +1,11 @@
  (Format: Year/Month/Day)
 Changes for 1.0rc3:
+*06/09/20:
+   * fixed little issue in fbsetbg (Mathias)
+     if someone has no wpsetters installed at all but only wants to use
+     fbsetroot thru fbsetbg then the warning would pop up, telling her
+     to install a wpsetter .. which she doenst want
+     util/fbsetbg
 *06/08/27:
    * Translations and addons to fbgm (thanks to Antonio Gomes)
 *06/08/14:

util/fbsetbg

@@ -46,7 +46,7 @@
 # _NET_CURRENT_DESKTOP
 
 # The wallpapersetter is selected in this order
-wpsetters="${wpsetters:=Esetroot wmsetbg feh hsetroot chbg display qiv xv xsri xli xsetbg}" # broken icewmbg'
+wpsetters="${wpsetters:=fbsetroot Esetroot wmsetbg feh hsetroot chbg display qiv xv xsri xli xsetbg}" # broken icewmbg'
 lastwallpaper="${HOME}/.fluxbox/lastwallpaper"
 
 
@@ -357,6 +357,9 @@ standardok=\
 "$WPSETTER is a nice wallpapersetter. You won't have any problems."
 
 case $WPSETTER in
+    fbsetroot) 
+        debugstory="fbsetroot does not show any pictures."
+        ;;
     chbg)
         full='-once -mode maximize'
         tile='-once -mode tile'