check the pid is > 0 before calling waitpid()

Signed-off-by: Angus Salkeld <asalkeld@redhat.com>
(cherry picked from commit d1f1f74e5f45fa5b94ebb096fa65fa33ecc23d09)

diff --git a/src/guestfs.c b/src/guestfs.c
index 488b658..bd1d0f3 100644 (file)
--- a/src/guestfs.c
+++ b/src/guestfs.c
@@ -214,7 +214,7 @@ guestfs_close (guestfs_h *g)
   g->sock = -1;
 
   /* Wait for subprocess(es) to exit. */
-  waitpid (g->pid, NULL, 0);
+  if (g->pid > 0) waitpid (g->pid, NULL, 0);
   if (g->recoverypid > 0) waitpid (g->recoverypid, NULL, 0);
 
   /* Remove tmpfiles. */