Add application flag zombie_exec so registered applications can apply to be executed on channels that are already hungup, like the inline exec this is only limited to a small family of apps that do not use the channel for audio.

src/mod/applications/mod_hash/mod_hash.c

@@ -945,7 +945,7 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_hash_load)
 	switch_scheduler_add_task(switch_epoch_time_now(NULL) + LIMIT_HASH_CLEANUP_INTERVAL, limit_hash_cleanup_callback, "limit_hash_cleanup", "mod_hash", 0, NULL,
 						  SSHF_NONE);
 	
-	SWITCH_ADD_APP(app_interface, "hash", "Insert into the hashtable", HASH_DESC, hash_function, HASH_USAGE, SAF_SUPPORT_NOMEDIA)
+	SWITCH_ADD_APP(app_interface, "hash", "Insert into the hashtable", HASH_DESC, hash_function, HASH_USAGE, SAF_SUPPORT_NOMEDIA | SAF_ZOMBIE_EXEC)
 	SWITCH_ADD_API(commands_api_interface, "hash", "hash get/set", hash_api_function, "[insert|delete|select]/<realm>/<key>/<value>");
 	SWITCH_ADD_API(commands_api_interface, "hash_dump", "dump hash/limit_hash data (used for synchronization)", hash_dump_function, HASH_DUMP_SYNTAX);
 	SWITCH_ADD_API(commands_api_interface, "hash_remote", "hash remote", hash_remote_function, HASH_REMOTE_SYNTAX);