R0.10c with patch 1

November 13, 2014

f_unlink function does not remove cluster chain of the file. It reads to
a lost cluster of the FAT volume. This is added at a bugfix of R0.10c.

src/ff.c

@@ -3486,8 +3486,9 @@ FRESULT f_unlink (
 				if (dir[DIR_Attr] & AM_RDO)
 					res = FR_DENIED;		/* Cannot remove R/O object */
 			}
-			if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) {	/* Is it a sub-dir? */
+			if (res == FR_OK) {
 				dclst = ld_clust(dj.fs, dir);
+				if (dir[DIR_Attr] & AM_DIR) {	/* Is it a sub-dir? */
 					if (!dclst) {
 						res = FR_INT_ERR;
 					} else {					/* Make sure the sub-directory is empty */
@@ -3505,6 +3506,7 @@ FRESULT f_unlink (
 						}
 					}
 				}
+			}
 			if (res == FR_OK) {
 				res = dir_remove(&dj);		/* Remove the directory entry */
 				if (res == FR_OK && dclst)	/* Remove the cluster chain if exist */