blkid: fix double free [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/misc-utils/blkid.c b/misc-utils/blkid.c
index fa38d82f6b607728196c4ac2fb4ab8af75add5bb..856eba00dfc1f97b0b6411b97ac3356a5fa73913 100644 (file)
--- a/misc-utils/blkid.c
+++ b/misc-utils/blkid.c
@@ -370,6 +370,7 @@ static int append_str(char **res, size_t *sz, const char *a, const char *b)
        str = realloc(str, len + 1);
        if (!str) {
                free(*res);
+               *res = NULL;
                return -1;
        }