Taking only the first frame of a gif to determine the width and height

(to prevent concatenation of sizes)

stpkg

@@ -732,8 +732,8 @@ __pack() {
         local INIT_WIDTH=$WIDTH
         local INIT_HEIGHT=$HEIGHT
         picture_resize_preview "$DEST" "$NAME"
-        local WIDTH=$( identify -format "%w" "$DEST") >/dev/null
-        local HEIGHT=$(identify -format "%h" "$DEST") >/dev/null
+        local WIDTH=$( identify -format "%w" "$DEST[0]") >/dev/null
+        local HEIGHT=$(identify -format "%h" "$DEST[0]") >/dev/null
 
         # Add the sticker to the index file
         create_sticker_json "$PACK_NAME" "$NAME" "$WIDTH" "$HEIGHT" "$TYPE" "$MXC" >> $DEST_INDEX