70_Pushbullet.pm: bugfix (forum 42805)

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@9730 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/FHEM/70_Pushbullet.pm

@@ -28,6 +28,7 @@ use warnings;
 use Data::Dumper;
 use utf8;
 use Encode qw( encode_utf8 );
+use HttpUtils;
 use JSON;
 
 #use diagnostics;