Be more careful about tree entry modes.

diff --git a/git-prune-script b/git-prune-script
old mode 100755 (executable)
new mode 100644 (file)
index 30a989e..9ba89a5
--- a/git-prune-script
+++ b/git-prune-script
@@ -1,5 +1,4 @@
 #!/bin/sh
-
 dryrun=
 while case "$#" in 0) break ;; esac
 do