[PATCH V2 03/12] zap_sector: fix memory leak

[Wu Guanghao <wuguanghao3@xxxxxxxxxx>]

In zap_sector(), need free buf before return,
otherwise it will cause memory leak.

Signed-off-by: Wu Guanghao <wuguanghao3@xxxxxxxxxx>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@xxxxxxxxxx>
Reviewed-by: Wu Bo <wubo40@xxxxxxxxxx>
---
 misc/mke2fs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index afbcf486..2f229534 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -585,8 +585,10 @@ static void zap_sector(ext2_filsys fs, int sect, int nsect)
 		else {
 			magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 			if ((*magic == BSD_DISKMAGIC) ||
-			    (*magic == BSD_MAGICDISK))
+			    (*magic == BSD_MAGICDISK)) {
+				free(buf);
 				return;
+			}
 		}
 	}

--