Snippets for aewan 1.0.01 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/981zh539fwmhh0icza7bwk3wglb57bxw-aewan-1.0.01.drv.

document.c:63:42: warning: operation on 'doc->layer_count' may be undefined [-Wsequence-point]
   63 |    (doc->layers = srealloc(doc->layers, (++doc->layer_count) * sizeof(Layer*)))
      |                                         ~^~~~~~~~~~~~~~~~~~~

vlayer.c:12:14: warning: 'doc' is used uninitialized [-Wuninitialized]
   12 |    Document *doc = (Document*) doc;
      |              ^~~

aewl/form.c:57:45: warning: operation on 'f->last_widget' may be undefined [-Wsequence-point]
   57 |       f->last_widget->next = f->last_widget = wid;
      |                              ~~~~~~~~~~~~~~~^~~~~

bores/kurses.c:142:8: warning: variable 'maxy' set but not used [-Wunused-but-set-variable]
  142 |    int maxy, maxx;
      |        ^~~~

bores/kurses.c:148:14: warning: variable 'maxx' set but not used [-Wunused-but-set-variable]
  148 |    int maxy, maxx;
      |              ^~~~

aecat.c:152:17: warning: '*(unsigned char *)((char *)&cur_state + offsetof(struct html_output_state_t, blink_tag_open))' may be used uninitialized [-Wmaybe-uninitialized]
  152 |    if (cur_state.blink_tag_open) fputs("</blink>", f);
      |        ~~~~~~~~~^~~~~~~~~~~~~~~

aecat.c:130:24: warning: 'cur_state.color' may be used uninitialized [-Wmaybe-uninitialized]
  130 |          if (use_color && (dec.fg != cur_state.color ||
      |              ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  131 |                             dec.bg != cur_state.bgcolor)) {
      |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

aecat.c:130:54: warning: 'cur_state.bgcolor' may be used uninitialized [-Wmaybe-uninitialized]
  130 |          if (use_color && (dec.fg != cur_state.color ||
      |                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
  131 |                             dec.bg != cur_state.bgcolor)) {
      |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~