rename variable to conform to the next commit

src/http/modules/ngx_http_fastcgi_module.c

diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 86cd62a..233b25a 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -2021,7 +2021,7 @@
     u_char                       *p;
     size_t                        size;
     uintptr_t                    *code;
-    ngx_str_t                    *h;
+    ngx_str_t                    *hide;
     ngx_uint_t                    i;
     ngx_array_t                   headers_names;
     ngx_keyval_t                 *src;
@@ -2249,16 +2249,16 @@
 
 #if (NGX_HTTP_CACHE)
 
-    h = conf->upstream.cache ? ngx_http_fastcgi_hide_cache_headers:
-                               ngx_http_fastcgi_hide_headers;
+    hide = conf->upstream.cache ? ngx_http_fastcgi_hide_cache_headers:
+                                  ngx_http_fastcgi_hide_headers;
 #else
 
-    h = ngx_http_fastcgi_hide_headers;
+    hide = ngx_http_fastcgi_hide_headers;
 
 #endif
 
     if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream,
-                                            &prev->upstream, h, &hash)
+                                            &prev->upstream, hide, &hash)
         != NGX_OK)
     {
         return NGX_CONF_ERROR;