Properly fallback to ascii mode if isn't a file

fetch

@@ -1519,11 +1519,17 @@ getimage () {
     esac
 
     # If $img is empty, reset padding to 0 and exit the function
-    if [ -z "$img" ]; then
-        padding="\033[0C"
+    if [ ! -f "$img" ]; then
+        # Fallback to ascii mode
+        image="ascii"
+        getascii
+
         return
     fi
 
+    # Lines equals terminal height
+    lines=$(tput lines)
+
     # Check to see if the image has a file extension
     case "${img##*/}" in
         *"."*)
@@ -1590,9 +1596,6 @@ getimage () {
         esac
     fi
 
-    # Lines equals terminal height
-    lines=$(tput lines)
-
     # The final image
     img="$imgtempdir/$imgname"
 }