Function ghostty_render_state_row_iterator_next 

pub unsafe extern "C" fn ghostty_render_state_row_iterator_next(
    iterator: GhosttyRenderStateRowIterator_ptr,
) -> bool

Move a render-state row iterator to the next row.

Returns true if the iterator moved successfully and row data is available to read at the new position.

@param iterator The iterator handle to advance (may be NULL) @return true if advanced to the next row, false if iterator is NULL or if the iterator has reached the end

@ingroup render