Don't close stdin when loopfiles reads "-".

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/lib.c b/lib/lib.c
index 3f4819fb..09264c95 100644
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -570,7 +570,7 @@ void loopfiles_rw(char **argv, int flags, int permissions, int failok,
       continue;
     }
     function(fd, *argv);
-    if (flags & O_CLOEXEC) close(fd);
+    if ((flags & O_CLOEXEC) && fd) close(fd);
   } while (*++argv);
 }