HMCCUCHN: try to fix usleep bug

git-svn-id: svn://svn.code.sf.net/p/fhem/code/trunk@10380 2b470e98-0d58-463d-a4d8-8e2adae1ed80

fhem/contrib/HMCCU/88_HMCCUCHN.pm

@@ -40,7 +40,7 @@ use strict;
 use warnings;
 use SetExtensions;
 
-use Time::HiRes;
+use Time::HiRes qw( usleep );
 
 sub HMCCUCHN_Define ($@);
 sub HMCCUCHN_Set ($@);