sim: Only one default_decode() function for all card types
diff --git a/src/sim/sim_int.h b/src/sim/sim_int.h
index 73f144c..0a3772b 100644
--- a/src/sim/sim_int.h
+++ b/src/sim/sim_int.h
@@ -12,6 +12,9 @@
 
 extern const struct osim_card_sw ts102221_uicc_sw[0];
 
+int default_decode(struct osim_decoded_data *dd,
+		   const struct osim_file_desc *desc,
+		   int len, uint8_t *data);
 
 void add_filedesc(struct osim_file_desc *root, const struct osim_file_desc *in, int num);
 struct osim_file_desc *alloc_df(void *ctx, uint16_t fid, const char *name);