libfuse: Assign NULL to "old" to avoid free it twice (#522)

Assign NULL to "old" at the first free(), to avoid the possible 2nd free() for it.

Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Co-authored-by: Liao Pingfang <liao.pingfang@zte.com.cn>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/modules/iconv.c b/lib/modules/iconv.c
index eb5edd8..3a4db7c 100644
--- a/lib/modules/iconv.c
+++ b/lib/modules/iconv.c
@@ -705,6 +705,7 @@ static struct fuse_fs *iconv_new(struct fuse_args *args,
 	if (old) {
 		setlocale(LC_CTYPE, old);
 		free(old);
+		old = NULL;
 	}
 
 	ic->next = next[0];