keep prototype consistant with declaration

remove compilation warning:
src/hsts.c:49: warning: 'should_secure_host' declared inline after being called
src/hsts.c:49: warning: previous declaration of 'should_secure_host' was here
Don't overwrite wm class and name properties (#137).

The explicite setting of WV_CLASS values prevented to change these properties
via gtk default options --name and --class.