[PATCH] Do not try to unlock VG which is not locked.

If the vg_read() returned error, no lock was taken,
so always call vg_release().

Otherwise this can happen because of missing FAILED_*:

# vgchange -a y x --ignorelockingfailure
  Volume group "x" not found
  Internal error: Attempt to unlock unlocked VG x

Signed-off-by: Milan Broz <[email protected]>
---
 tools/toollib.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/tools/toollib.c b/tools/toollib.c
index 39a6d69..33daf30 100644
--- a/tools/toollib.c
+++ b/tools/toollib.c
@@ -452,8 +452,7 @@ static int _process_one_vg(struct cmd_context *cmd, const char *vg_name,
 		ret_max = ret;
 
 out:
-	if ((vg_read_error(vg) == FAILED_ALLOCATION)||
-	    (vg_read_error(vg) == FAILED_LOCKING))
+	if (vg_read_error(vg))
 		vg_release(vg);
 	else
 		unlock_and_release_vg(cmd, vg, vg_name);
-- 
1.6.5.3