Build dies with current HEAD

[posguy99]

commit d00b4b3 (HEAD -> master, origin/master, origin/HEAD)

Here's the tail end of the error. macOS Catalina 10.15.7.

iffe: test: is sys/types.h a header ... yes
iffe: test: is -liconv a library ... yes
iffe: test: is /Users/mwilson/src/ksh/arch/darwin.i386-64/lib/libast.a a library ... yes
iffe: test: is -lutil a library ... yes
iffe: test: is /Users/mwilson/src/ksh/arch/darwin.i386-64/lib/libcmd.a a library ... yes
iffe: test: is /Users/mwilson/src/ksh/arch/darwin.i386-64/lib/libdll.a a library ... yes
iffe: test: is acct a command ... no
iffe: test: is acct a library data symbol ... no
iffe: test: is acct.h a header ... no
iffe: test: is acct a reserved keyword ... no
iffe: test: is acct a library function ... yes
iffe: test: is acct a math library symbol ... no
iffe: test: is sys/acct.h a header ... yes
iffe: test: is acct a type or typedef ... no

• cc '-D_AST_git_commit="d00b4b39"' -Os -I. -I/Users/mwilson/src/ksh/src/cmd/ksh93 -Iinclude -I/Users/mwilson/src/ksh/src/cmd/ksh93/include -I/Users/mwilson/src/ksh/arch/darwin.i386-64/include/ast '-D_API_ast=20100309' -D_BLD_shell -DSHOPT_DYNAMIC -DSHOPT_MULTIBYTE -D_PACKAGE_ast -DSHOPT_FIXEDARRAY -DSHOPT_SUID_EXEC -DSHOPT_BRACEPAT -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_HISTEXPAND '-DERROR_CONTEXT_T=Error_context_t' -DSHOPT_ESH -c /Users/mwilson/src/ksh/src/cmd/ksh93/bltins/cd_pwd.c
  /Users/mwilson/src/ksh/src/cmd/ksh93/bltins/cd_pwd.c:101:7: error: implicit declaration of function 'test_inode' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  if(!test_inode(nv_getval(pwdnod),e_dot))
  ^
  1 error generated.
  mamake [cmd/ksh93]: *** exit code 1 making cd_pwd.o
  mamake: *** exit code 1 making cmd/ksh93
  mamake: *** exit code 1 making all
  package: make done at Wed Jan 20 11:35:56 PST 2021 in /Users/mwilson/src/ksh/arch/darwin.i386-64

[posguy99]

Revert ec0155e and it builds again.

[McDutchie]

The cause is probably that I forgot to include test.h which contains the declaration of the test_inode() function.