* cont.c (Init_Cont): th is used only when FIBER_USE_NATIVE.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

cont.c

@@ -1425,9 +1425,9 @@ rb_fiber_s_current(VALUE klass)
 void
 Init_Cont(void)
 {
+#ifdef FIBER_USE_NATIVE
     rb_thread_t *th = GET_THREAD();
 
-#ifdef FIBER_USE_NATIVE
 #ifdef _WIN32
     SYSTEM_INFO info;
     GetSystemInfo(&info);