style fix

src/core/ngx_radix_tree.c

diff --git a/src/core/ngx_radix_tree.c b/src/core/ngx_radix_tree.c
index 957ec30..b94b4b7 100644
--- a/src/core/ngx_radix_tree.c
+++ b/src/core/ngx_radix_tree.c
@@ -88,7 +88,7 @@
 
         do {
             if (ngx_radix32tree_insert(tree, key, mask, NGX_RADIX_NO_VALUE)
-                                                                     != NGX_OK)
+                != NGX_OK)
             {
                 return NULL;
             }