Snippets for xterm 411 from Alpine x86

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-x86/community/xterm/xterm-411-r0.log.

• ./util.c:129:17: warning: unsigned conversion from 'long long int' to 'Pixel' {aka 'long unsigned int'} changes value from '68719476735' to '4294967295' [-Woverflow]
    129 | #define NoPixel 0xfffffffff
        |                 ^~~~~~~~~~~
  

• ./main.c:3308:1: warning: 'pty_search' defined but not used [-Wunused-function]
   3308 | pty_search(int *pty)
        | ^~~~~~~~~~