Snippets for openssh 10.6_p1 from Alpine loongarch64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-loongarch64/main/openssh/openssh-10.6_p1-r1.log.

• /usr/include/sys/cdefs.h:4:2: warning: #warning usage of non-standard #include <sys/cdefs.h> is deprecated [-Wcpp]
      4 | #warning usage of non-standard #include <sys/cdefs.h> is deprecated
        |  ^~~~~~~
  

• chacha_private.h:53:31: warning: initializer-string for array of 'char' truncates NUL terminator but destination lacks 'nonstring' attribute (17 chars into 16 available) [-Wunterminated-string-initialization]
     53 | static const char sigma[16] = "expand 32-byte k";
        |                               ^~~~~~~~~~~~~~~~~~
  

• chacha_private.h:54:29: warning: initializer-string for array of 'char' truncates NUL terminator but destination lacks 'nonstring' attribute (17 chars into 16 available) [-Wunterminated-string-initialization]
     54 | static const char tau[16] = "expand 16-byte k";
        |                             ^~~~~~~~~~~~~~~~~~