test_qemu: pclose may return any != 0 on error.

In particular pclose returns a status > 0 if the command fails.
(cherry picked from commit a24652c7b27e8494268ccb6c9a5a2e5541ba5efd)

diff --git a/src/launch.c b/src/launch.c
index ca48bdd..310a88d 100644 (file)
--- a/src/launch.c
+++ b/src/launch.c
@@ -1083,7 +1083,7 @@ test_qemu_cmd (guestfs_h *g, const char *cmd, char **ret)
     return -1;
   }
 
-  if (pclose (fp) == -1)
+  if (pclose (fp) != 0)
     return -1;
 
   return 0;