Fixed save crash

src/duskdolphin/save/savedolphin.h

@@ -66,3 +66,26 @@ errorret_t saveWriteDolphin(const uint8_t slot, const savefile_t *file);
  * @return An error code if the delete fails.
  */
 errorret_t saveDeleteDolphin(const uint8_t slot);
+
+/**
+ * Builds the memory card file name for a given save slot, from
+ * SAVE_DOLPHIN_GAME_CODE and the slot index.
+ *
+ * @param slot The save slot index.
+ * @param out Destination buffer for the file name.
+ * @param max Size of out, in bytes.
+ */
+void saveGetFileNameDolphin(
+  const uint8_t slot, char_t *out, const size_t max
+);
+
+/**
+ * Describes a libogc CARD_ERROR_* result code (see
+ * https://libogc.devkitpro.org/group__card__errors.html), for logging
+ * alongside the raw numeric code.
+ *
+ * @param result The result code returned by a CARD_* libogc call.
+ * @return A human-readable description of the result code, or
+ * "unknown card error" if result doesn't match a known CARD_ERROR_* code.
+ */
+const char_t *saveCardErrorStringDolphin(const int32_t result);