Only allow unshelling a post if its Sone is not a shell.

diff --git a/src/main/java/net/pterodactylus/sone/data/PostShell.java b/src/main/java/net/pterodactylus/sone/data/PostShell.java
index 7bcddfa..b0cb8e6 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/data/PostShell.java
+++ b/src/main/java/net/pterodactylus/sone/data/PostShell.java
@@ -199,7 +199,7 @@ public class PostShell extends Post implements Shell<Post> {
         */
        @Override
        public boolean canUnshell() {
-               return (id != null) && (sone != null) && (time != null) && (text != null);
+               return (id != null) && (sone != null) && (!(sone instanceof Shell<?>)) && (time != null) && (text != null);
        }
 
        /**