Function mupdf_sys::fz_keep_stroke_state

pub unsafe extern "C" fn fz_keep_stroke_state(
    ctx: *mut fz_context, 
    stroke: *const fz_stroke_state
) -> *mut fz_stroke_state

Take an additional reference to a stroke state structure.

No modifications should be carried out on a stroke state to which more than one reference is held, as this can cause race conditions.