Modules compatibility: health check fields.

src/http/ngx_http_request.h

diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index a641d78..e0c987c 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -542,6 +542,8 @@
     unsigned                          stat_reading:1;
     unsigned                          stat_writing:1;
 
+    unsigned                          health_check:1;
+
     /* used to parse HTTP headers */
 
     ngx_uint_t                        state;

src/stream/ngx_stream.h

diff --git a/src/stream/ngx_stream.h b/src/stream/ngx_stream.h
index deca8ae..c4bb617 100644
--- a/src/stream/ngx_stream.h
+++ b/src/stream/ngx_stream.h
@@ -226,8 +226,10 @@
     ngx_uint_t                     status;
 
 #if (NGX_STREAM_SSL)
-    ngx_uint_t                     ssl;  /* unsigned  ssl:1; */
+    unsigned                       ssl:1;
 #endif
+
+    unsigned                       health_check:1;
 };