declare `rb_w32_sysinit` in header.

* include/ruby/win32.h (rb_w32_sysinit): declare.
  [ruby-core:78444] [Bug #12994]

* ruby.c (ruby_sysinit): follow above change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57072 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

include/ruby/win32.h

@@ -233,6 +233,7 @@ struct ifaddrs {
 #define IFF_POINTOPOINT IFF_POINTTOPOINT
 #endif
 
+extern void   rb_w32_sysinit(int *, char ***);
 extern DWORD  rb_w32_osid(void);
 extern rb_pid_t  rb_w32_pipe_exec(const char *, const char *, int, int *, int *);
 extern int    flock(int fd, int oper);

ruby.c

@@ -2256,7 +2256,6 @@ void
 ruby_sysinit(int *argc, char ***argv)
 {
 #if defined(_WIN32)
-    void rb_w32_sysinit(int *argc, char ***argv);
     rb_w32_sysinit(argc, argv);
 #endif
     origarg.argc = *argc;