Style.

src/http/ngx_http_upstream.c

diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 3d01523..4df485a 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -416,10 +416,10 @@
 
 
 ngx_conf_bitmask_t  ngx_http_upstream_cache_method_mask[] = {
-   { ngx_string("GET"),  NGX_HTTP_GET},
-   { ngx_string("HEAD"), NGX_HTTP_HEAD },
-   { ngx_string("POST"), NGX_HTTP_POST },
-   { ngx_null_string, 0 }
+    { ngx_string("GET"), NGX_HTTP_GET },
+    { ngx_string("HEAD"), NGX_HTTP_HEAD },
+    { ngx_string("POST"), NGX_HTTP_POST },
+    { ngx_null_string, 0 }
 };