system/clamsmtp: Fixed chown syntax

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/clamsmtp/clamsmtp.SlackBuild

@@ -74,7 +74,7 @@ mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
 tar xvf $CWD/$PRGNAM-$VERSION.tar.?z*
 cd $TMP/$PRGNAM-$VERSION
-chown -R root.root .
+chown -R root:root .
 find -L . \
   \( -perm 664 -o -perm 666 -o -perm 600 -o -perm 440 -o -perm 444 -o -perm 400 \) \
   -exec chmod 644 {} \+