Reorganize OpenSSL < 1.0.0 compatibility for greater readability.

evhtp.c

@@ -2828,36 +2828,28 @@ htp__accept_cb_(struct evconnlistener * serv, int fd, struct sockaddr * s, int s
 #ifndef EVHTP_DISABLE_SSL
 #ifndef EVHTP_DISABLE_EVTHR
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
-static
-#if OPENSSL_VERSION_NUMBER >= 0x10000000L
-void
-#else
-unsigned long
-#endif
-htp__ssl_get_thread_id_(
-#if OPENSSL_VERSION_NUMBER >= 0x10000000L
-    CRYPTO_THREADID * id
-#else
-    void
-#endif
-    )
-{
-    unsigned long tid;
 
 #ifndef WIN32
-    tid = (unsigned long)pthread_self();
+#define tid (unsigned long)pthread_self()
 #else
-    tid = pthread_self().p;
+#define tid pthread_self().p
 #endif
 
-#if OPENSSL_VERSION_NUMBER >= 0x10000000L
-    CRYPTO_THREADID_set_numeric(id, tid);
+#if OPENSSL_VERSION_NUMBER < 0x10000000L
+static unsigned long
+htp__ssl_get_thread_id_(void)
+{
+	return tid;
+}
 #else
-    return tid;
+static void
+htp__ssl_get_thread_id_(CRYPTO_THREADID *id)
+{
+	CRYPTO_THREADID_set_numeric(id, tid);
+}
 #endif
 
 #endif
-}
 
 static void
 htp__ssl_thread_lock_(int mode, int type, const char * file, int line)