nfctool: Add a null pointer check in llcp_decode_cleanup

g_hash_table_destroy raises an assert when called with a null pointer.
connection_hash can be NULL when sniffer_init() fails before calling
llcp_init().

diff --git a/tools/nfctool/llcp-decode.c b/tools/nfctool/llcp-decode.c
index 6f8c59d..8afa067 100644 (file)
--- a/tools/nfctool/llcp-decode.c
+++ b/tools/nfctool/llcp-decode.c
@@ -612,7 +612,8 @@ void llcp_decode_cleanup(void)
 
        snep_decode_cleanup();
 
-       g_hash_table_destroy(connection_hash);
+       if (connection_hash)
+               g_hash_table_destroy(connection_hash);
 }
 
 int llcp_decode_init(void)