[PATCH] util: fix cache invalidation of swtpm capabilities

[Daniel P. Berrangé <berrange@xxxxxxxxxx>]

The check for whether the swtpm binary was modified is checking pointers
to the mtime field in two distinct structs, so will always compare
different. This resulted in re-probing swtpm capabilities every time,
as many as 20 times for a single VM launch.

Fixes:

  commit 01cf7a1bb9f1da27ad8bcbaa82c4f7a948c6a793
  Author: Stefan Berger <stefanb@xxxxxxxxxx>
  Date:   Thu Jul 25 14:22:04 2019 -0400

    tpm: Check whether previously found executables were updated

Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
---
 src/util/virtpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util/virtpm.c b/src/util/virtpm.c
index 8a77ba98ff..ffec23a535 100644
--- a/src/util/virtpm.c
+++ b/src/util/virtpm.c
@@ -301,7 +301,7 @@ virTPMEmulatorInit(void)
                 findit = true;
 
             if (!findit &&
-                &statbuf.st_mtime != &prgs[i].stat->st_mtime)
+                statbuf.st_mtime != prgs[i].stat->st_mtime)
                 findit = true;
         }
 
-- 
2.33.1