SSL: logging level of "inappropriate fallback" (ticket #662).

Patch by Erik Dubbelboer.

src/event/ngx_event_openssl.c

diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 7760029..ab54d88 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1858,6 +1858,9 @@
 #ifdef SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING
             || n == SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING           /*  345 */
 #endif
+#ifdef SSL_R_INAPPROPRIATE_FALLBACK
+            || n == SSL_R_INAPPROPRIATE_FALLBACK                     /*  373 */
+#endif
             || n == 1000 /* SSL_R_SSLV3_ALERT_CLOSE_NOTIFY */
             || n == SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE             /* 1010 */
             || n == SSL_R_SSLV3_ALERT_BAD_RECORD_MAC                 /* 1020 */