Fix: CRYPTO_THREAD_run_once

InitOnceExecuteOnce returns nonzero on success:
MSDN: "If the function succeeds, the return value is nonzero."

So return 1 if it is nonzero, 0 others.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

crypto/threads_win.c

@@ -136,9 +136,9 @@ BOOL CALLBACK once_cb(PINIT_ONCE once, PVOID p, PVOID *pp)
 int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
 {
     if (InitOnceExecuteOnce(once, once_cb, init, NULL))
-        return 0;
+        return 1;
 
-    return 1;
+    return 0;
 }
 
 # endif