Style fix.

src/http/ngx_http_variables.c

diff --git a/src/http/ngx_http_variables.c b/src/http/ngx_http_variables.c
index b561617..76b2925 100644
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -77,9 +77,9 @@
     ngx_http_variable_value_t *v, uintptr_t data);
 static ngx_int_t ngx_http_variable_request_body_file(ngx_http_request_t *r,
     ngx_http_variable_value_t *v, uintptr_t data);
-
 static ngx_int_t ngx_http_variable_status(ngx_http_request_t *r,
     ngx_http_variable_value_t *v, uintptr_t data);
+
 static ngx_int_t ngx_http_variable_sent_content_type(ngx_http_request_t *r,
     ngx_http_variable_value_t *v, uintptr_t data);
 static ngx_int_t ngx_http_variable_sent_content_length(ngx_http_request_t *r,