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

In particular pclose returns a status > 0 if the command fails.

diff --git a/src/launch.c b/src/launch.c
index cb0f637..11d1acf 100644 (file)
--- a/src/launch.c
+++ b/src/launch.c
@@ -1110,7 +1110,7 @@ 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;