Add support for cleanly exiting ssl_server2

Useful for memory testing
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 3cc3f8a..33d56ce 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -653,6 +653,12 @@
         len = ret;
         printf( " %d bytes read\n\n%s", len, (char *) buf );
 
+        if( len >= 10 && memcmp( buf, "SERVERQUIT", 10 ) == 0 )
+        {
+            ret = 0;
+            goto exit;
+        }
+
         if( ret > 0 )
             break;
     }