[PATCH v2 1/2] kpartx/devmapper.c: fix unused-but-set variable error

[Sergei Trofimovich <slyich@xxxxxxxxx>]

On gcc-12 build failed as:

    devmapper.c: In function 'dm_simplecmd':
    devmapper.c:61:13: error: unused variable 'udev_wait_flag' [-Werror=unused-variable]
       61 |         int udev_wait_flag = (task == DM_DEVICE_RESUME ||
          |             ^~~~~~~~~~~~~~

Fix error by hiding it's declaration under #ifdef that uses it.

CC: Martin Wilck <mwilck@xxxxxxxx>
CC: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
Signed-off-by: Sergei Trofimovich <slyich@xxxxxxxxx>
---
 kpartx/devmapper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kpartx/devmapper.c b/kpartx/devmapper.c
index 3efd6dfc..511c090f 100644
--- a/kpartx/devmapper.c
+++ b/kpartx/devmapper.c
@@ -58,9 +58,9 @@ out:
 int dm_simplecmd(int task, const char *name, int no_flush, uint16_t udev_flags)
 {
 	int r = 0;
+#ifdef LIBDM_API_COOKIE
 	int udev_wait_flag = (task == DM_DEVICE_RESUME ||
 			      task == DM_DEVICE_REMOVE);
-#ifdef LIBDM_API_COOKIE
 	uint32_t cookie = 0;
 #endif
 	struct dm_task *dmt;
-- 
2.34.1

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