Fix hang when wallpaper is empty

fetch

@@ -1031,7 +1031,10 @@ getimage () {
     esac
 
     # If $img is empty, reset padding to 0 and exit the function
-    [ -z "$img" ] && padding="\e[0C"; return
+    if [ -z "$img" ]; then
+        padding="\e[0C"
+        return
+    fi
 
     # Get name of image and prefix it with it's crop mode and offset
     imgname="$crop_mode-$crop_offset-$imgsize-${img##*/}"