[PATCH] LXC: fix memory leak in lxcContainerMountFSBlockHelper

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we alloc the memory for format in lxcContainerMountDetectFilesystem
but without free it in lxcContainerMountFSBlockHelper.

this patch just call VIR_FREE to free it.

Signed-off-by: Gao feng <gaofeng@xxxxxxxxxxxxxx>
---
 src/lxc/lxc_container.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index 297bd6d..5651255 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -1014,6 +1014,7 @@ static int lxcContainerMountFSBlockHelper(virDomainFSDefPtr fs,
     }
 
 cleanup:
+    VIR_FREE(format);
     return ret;
 }
 
-- 
1.7.7.6

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