fixed compiler warning

src/libstrongswan/plugins/gcrypt/gcrypt_rsa_private_key.c

@@ -577,6 +577,8 @@ static gcrypt_rsa_private_key_t *load(chunk_t blob)
 	chunk_t n, e, d, u, p, q;
 	gcry_error_t err;
 	
+	n = e = d = u = p = q = chunk_empty;
+	
 	parser = asn1_parser_create(privkeyObjects, blob);
 	parser->set_flags(parser, FALSE, TRUE);
 	

src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c

@@ -398,6 +398,8 @@ static gcrypt_rsa_public_key_t *load(chunk_t blob)
 	bool success = FALSE;
 	gcry_error_t err;
 	
+	n = e = chunk_empty;
+	
 	parser = asn1_parser_create(pubkeyObjects, blob);
 	while (parser->iterate(parser, &objectID, &object))
 	{