[PATCH 5/6] CLEANUP: fcgi: Replace memcpy() on ist by istcat()

[Tim Duesterhus]

This is a little cleaner, because the length of the resulting string does not
need to be calculated manually.
---
 src/mux_fcgi.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/mux_fcgi.c b/src/mux_fcgi.c
index a22bc9391..0a8679019 100644
--- a/src/mux_fcgi.c
+++ b/src/mux_fcgi.c
@@ -2030,6 +2030,8 @@ static size_t fcgi_strm_send_params(struct fcgi_conn 
*fconn, struct fcgi_strm *f
                                else if (isteq(p.n, ist("content-type")))
                                        p.n = ist("CONTENT_TYPE");
                                else {
+                                       struct ist n;
+
                                        if (isteq(p.n, ist("host")))
                                                params.srv_name = p.v;
                                        else if (isteq(p.n, ist("te"))) {
@@ -2046,9 +2048,10 @@ static size_t fcgi_strm_send_params(struct fcgi_conn 
*fconn, struct fcgi_strm *f
                                        if 
(isttest(fconn->proxy->server_id_hdr_name) && isteq(p.n, 
fconn->proxy->server_id_hdr_name))
                                                break;
 
-                                       memcpy(trash.area, "http_", 5);
-                                       memcpy(trash.area+5, p.n.ptr, p.n.len);
-                                       p.n = ist2(trash.area, p.n.len+5);
+                                       n = ist2(trash.area, 0);
+                                       istcat(&n, ist("http_"), trash.size);
+                                       istcat(&n, p.n, trash.size);
+                                       p.n = n;
                                }
 
                                if (!fcgi_encode_param(&outbuf, &p)) {
-- 
2.35.1