[Skiboot] [PATCH] libffs: fix gcc8 stringop-truncation warnings

[Brad Bishop]

Copy the null byte too in this copy operation to avoid the following
warning:

| libflash/libffs.c: In function 'ffs_part_info':
| libflash/libffs.c:525:3: error: 'strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Werror=stringop-truncation]
|    strncpy(n, ent->name, FFS_PART_NAME_MAX);
|    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Brad Bishop <bradleyb at fuzziesquirrel.com>
---
 libflash/libffs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libflash/libffs.c b/libflash/libffs.c
index 221c2b02..816153d3 100644
--- a/libflash/libffs.c
+++ b/libflash/libffs.c
@@ -522,7 +522,7 @@ int ffs_part_info(struct ffs_handle *ffs, uint32_t part_idx,
 		n = calloc(1, FFS_PART_NAME_MAX + 1);
 		if (!n)
 			return FLASH_ERR_MALLOC_FAILED;
-		strncpy(n, ent->name, FFS_PART_NAME_MAX);
+		strncpy(n, ent->name, FFS_PART_NAME_MAX +1);
 		*name = n;
 	}
 	return 0;
-- 
2.19.1