close weird external file descriptors

diff --git a/dehydrated b/dehydrated
index 126a50e9386edefe530b4f13b2697c146ad7bf4d..43de63bf63d8de31dfa3a214ea67b83f7f65230d 100755 (executable)
--- a/dehydrated
+++ b/dehydrated
@@ -13,6 +13,10 @@ set -o pipefail
 
 umask 077 # paranoid umask, we're creating private keys
 
+# Close weird external file descriptors
+exec 3>&-
+exec 4>&-
+
 VERSION="git-master-after-0.6.1"
 
 # Find directory in which this script is stored by traversing all symbolic links