Snippets for crispy-doom 7.1 from Alpine loongarch64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-loongarch64/testing/crispy-doom/crispy-doom-7.1-r0.log.

• v_video.c:820:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
    820 |     const int rx = x << crispy->hires;
        |     ^~~~~
  

• v_video.c:848:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
    848 |     const int dw = dx1 - dx0;
        |     ^~~~~
  

• v_video.c:856:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
    856 |     const int xoff = dx0 - rx;
        |     ^~~~~
  

• v_video.c:962:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
    962 |     int size = W_LumpLength(index);
        |     ^~~