* wayland/ui_display.c: Fix implicit function decl.

[tsutsui]

Fixes the following warning:

../uitoolkit/wayland/ui_display.c: In function 'ui_display_open':
../uitoolkit/wayland/ui_display.c:2748:5: warning: implicit declaration of function 'ui_event_source_add_fd' [-Wimplicit-function-declaration]
 2748 |     ui_event_source_add_fd(-10, auto_repeat);
      |     ^~~~~~~~~~~~~~~~~~~~~~

Note this "implicit function declaration" warning is treated as a fatal error on archLinux with gcc14.

[tsutsui]

Note gcc14 on archLinux complains further:

 vte.c: In function 'search_find':
vte.c:408:57: error: pointer type mismatch in conditional expression [-Wincompatible-pointer-types]
  408 |   regex = PVT(terminal)->gregex ? PVT(terminal)->gregex : PVT(terminal)->vregex;
      |                                                         ^
vte.c:212:23: note: first expression has type 'GRegex *' {aka 'struct _GRegex *'}
  212 | #define PVT(terminal) ((VteTerminalPrivate*)(terminal)->_unused_padding[0])
      |                       ^
vte.c:408:35: note: in expansion of macro 'PVT'
  408 |   regex = PVT(terminal)->gregex ? PVT(terminal)->gregex : PVT(terminal)->vregex;
      |                                   ^~~
vte.c:212:23: note: second expression has type 'VteRegex *' {aka 'struct _VteRegex *'}
  212 | #define PVT(terminal) ((VteTerminalPrivate*)(terminal)->_unused_padding[0])
      |                       ^
vte.c:408:59: note: in expansion of macro 'PVT'
  408 |   regex = PVT(terminal)->gregex ? PVT(terminal)->gregex : PVT(terminal)->vregex;
      |                                                           ^~~

(I'm testing Linux CI using docker and will send a pullup request)

[arakiken]

Thanks.

[arakiken]

Fix error in vte.c -> 5b131b7