xenstore: Fix memory leak in command 'xenstore rm'

When option '-t' is used to do tidy remove, routine xs_directory()
will be called in order to check there are brother directories or not.
The returned pointer should be passed to free() after this check.

Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/xenstore/xenstore_client.c b/tools/xenstore/xenstore_client.c
index aaf3014d53..50fc3d7646 100644
--- a/tools/xenstore/xenstore_client.c
+++ b/tools/xenstore/xenstore_client.c
@@ -343,8 +343,10 @@ perform(enum mode mode, int optind, int argc, char **argv, struct xs_handle *xsh
                         unsigned int num;
                         char ** list = xs_directory(xsh, xth, p, &num);
 
-                        if (list && num == 0) {
-                            goto again;
+                        if (list) {
+                            free(list);
+                            if (num == 0)
+                                goto again;
                         }
                     }
                 }