From a59aaf6af967841b2f6c6da26e2be40d2f54d3f5 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@warmcat.com>
Date: Thu, 30 Apr 2020 20:26:19 +0100
Subject: [PATCH] strexp: reset out offset each time

A second strexp mustn't inherit the offset of the first, completed one
---
 CMakeLists.txt           | 2 +-
 lib/core/libwebsockets.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4b424af93..6e4d0051a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -327,7 +327,7 @@ set(PACKAGE "libwebsockets")
 set(CPACK_PACKAGE_NAME "${PACKAGE}")
 set(CPACK_PACKAGE_VERSION_MAJOR "4")
 set(CPACK_PACKAGE_VERSION_MINOR "0")
-set(CPACK_PACKAGE_VERSION_PATCH "3")
+set(CPACK_PACKAGE_VERSION_PATCH "4")
 set(CPACK_PACKAGE_RELEASE 1)
 set(CPACK_GENERATOR "RPM")
 set(CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}")
diff --git a/lib/core/libwebsockets.c b/lib/core/libwebsockets.c
index 5745f0fb3..75de923fd 100644
--- a/lib/core/libwebsockets.c
+++ b/lib/core/libwebsockets.c
@@ -938,6 +938,7 @@ lws_strexp_expand(lws_strexp_t *exp, const char *in, size_t len,
 			if (*in == '{') {
 				exp->state = LWS_EXPS_NAME_OR_CLOSE;
 				exp->name_pos = 0;
+				exp->exp_ofs = 0;
 				break;
 			}
 			/* treat as a literal */