test the more likely case first

src/http/ngx_http_parse.c

diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
index 2e38434..9777ebb 100644
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -882,10 +882,10 @@
         /* end of header line */
         case sw_almost_done:
             switch (ch) {
-            case CR:
-                break;
             case LF:
                 goto done;
+            case CR:
+                break;
             default:
                 return NGX_HTTP_PARSE_INVALID_HEADER;
             }