Snippets for mupdf 1.27.2 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/5hikfma34jv6cm1nql0yshsw2d8szkzh-mupdf-1.27.2.drv.

• source/fitz/deskew_neon.h:112:54: warning: variable 'q_pair_sum' is uninitialized when used here [-Wuninitialized]
    112 |                         q_pair_sum = vcombine_s32(pair_sum, vget_high_s32(q_pair_sum));
        |                                                                           ^~~~~~~~~~
  

• source/fitz/deskew_neon.h:99:54: warning: variable 'q_pair_sum' is uninitialized when used here [-Wuninitialized]
     99 |                         q_pair_sum = vcombine_s32(pair_sum, vget_high_s32(q_pair_sum));
        |                                                                           ^~~~~~~~~~
  

• source/html/html-layout.c:2282:1: warning: unused function 'cell_colspan' [-Wunused-function]
   2282 | cell_colspan(fz_html_box *cell)
        | ^~~~~~~~~~~~