nginx-0.1.28-RELEASE import

    *) Bugfix: nginx hogs CPU while proxying the huge files.

    *) Bugfix: nginx could not be built by gcc 4.0 on Linux.
diff --git a/src/core/ngx_output_chain.c b/src/core/ngx_output_chain.c
index 313557d..fc8a0bf 100644
--- a/src/core/ngx_output_chain.c
+++ b/src/core/ngx_output_chain.c
@@ -119,8 +119,10 @@
                 /* get the free buf */
 
                 if (ctx->free) {
-                    ctx->buf = ctx->free->buf;
-                    ctx->free = ctx->free->next;
+                    cl = ctx->free;
+                    ctx->buf = cl->buf;
+                    ctx->free = cl->next;
+                    ngx_free_chain(ctx->pool, cl);
 
                 } else if (out || ctx->allocated == ctx->bufs.num) {