Always return a Fixnum here. openssl defaults to 300.

Author: headius

src/main/java/org/jruby/ext/openssl/SSLSession.java

@@ -134,7 +134,8 @@ public IRubyObject set_time(final ThreadContext context, IRubyObject time) {
     @JRubyMethod(name = "timeout")
     public IRubyObject timeout(final ThreadContext context) {
         final SSLSessionContext sessionContext = sslSession().getSessionContext();
-        if ( sessionContext == null ) return context.nil;
+        // default in OpenSSL is 300
+        if ( sessionContext == null ) return context.runtime.newFixnum(300);
         return context.runtime.newFixnum(sessionContext.getSessionTimeout());
     }