libs/devicemodel: initialise op_bufs in xendevicemodel_xcall

To avoid freeing uninitialised buffer when taking the first error exit
path.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

diff --git a/tools/libs/devicemodel/core.c b/tools/libs/devicemodel/core.c
index 504543c1c58b5daf241855f401b1a1b122042a56..19ebef63b3b51fd9c8c3858cf7d29c26f9fefae6 100644 (file)
--- a/tools/libs/devicemodel/core.c
+++ b/tools/libs/devicemodel/core.c
@@ -79,7 +79,7 @@ int xendevicemodel_xcall(xendevicemodel_handle *dmod,
 {
     int ret = -1;
     void **xcall_bufs;
-    xen_dm_op_buf_t *op_bufs;
+    xen_dm_op_buf_t *op_bufs = NULL;
     unsigned int i;
 
     xcall_bufs = calloc(nr_bufs, sizeof(*xcall_bufs));