Merge pull request #7412 from bmcdonnell-ionx/bugfix-fatfs-dir-list-when-full

apply FatFs 0.13b hotfix - fix readdir() never terminates when dir is full

Author: Cruz Monrreal

features/filesystem/fat/ChaN/ff.cpp

@@ -1740,7 +1740,8 @@ FRESULT dir_next (	/* FR_OK(0):succeeded, FR_NO_FILE:End of table, FR_DENIED:Cou
 
 
 	ofs = dp->dptr + SZDIRE;	/* Next entry */
-	if (dp->sect == 0 || ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) return FR_NO_FILE;	/* Report EOT when offset has reached max value */
+	if (ofs >= (DWORD)((FF_FS_EXFAT && fs->fs_type == FS_EXFAT) ? MAX_DIR_EX : MAX_DIR)) dp->sect = 0;	/* Disable it if the offset reached the max value */
+	if (dp->sect == 0) return FR_NO_FILE;	/* Report EOT if it has been disabled */
 
 	if (ofs % SS(fs) == 0) {	/* Sector changed? */
 		dp->sect++;				/* Next sector */