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 3ea0f96..5a9b06f 100644
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -379,7 +379,7 @@
 ngx_http_variable_value_t *
 ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index)
 {
-    ngx_http_variable_value_t   *v;
+    ngx_http_variable_value_t  *v;
 
     v = &r->variables[index];