fix lintian W: maintainer-script-ignores-errors postrm

diff --git a/debian/postrm b/debian/postrm
index e9338c4..523b786 100755 (executable)
--- a/debian/postrm
+++ b/debian/postrm
@@ -1,4 +1,6 @@
 #!/bin/sh
+set -e
+
 #DEBHELPER#
 if [ "$1" = "purge" ]; then
   echo