Merge branch 'upstream-nghttp2' into update-nghttp2

# By nghttp2 upstream
* upstream-nghttp2:
  nghttp2 2023-02-13 (be049129)

Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2.h

@@ -1430,12 +1430,6 @@ typedef ssize_t (*nghttp2_recv_callback)(nghttp2_session *session, uint8_t *buf,
  * respectively.  The header name/value pairs are emitted via
  * :type:`nghttp2_on_header_callback`.
  *
- * For HEADERS, PUSH_PROMISE and DATA frames, this callback may be
- * called after stream is closed (see
- * :type:`nghttp2_on_stream_close_callback`).  The application should
- * check that stream is still alive using its own stream management or
- * :func:`nghttp2_session_get_stream_user_data()`.
- *
  * Only HEADERS and DATA frame can signal the end of incoming data.
  * If ``frame->hd.flags & NGHTTP2_FLAG_END_STREAM`` is nonzero, the
  * |frame| is the last frame from the remote peer in this stream.

Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2ver.h

@@ -29,7 +29,7 @@
  * @macro
  * Version number of the nghttp2 library release
  */
-#define NGHTTP2_VERSION "1.50.0"
+#define NGHTTP2_VERSION "1.52.0"
 
 /**
  * @macro
@@ -37,6 +37,6 @@
  * release. This is a 24 bit number with 8 bits for major number, 8 bits
  * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203.
  */
-#define NGHTTP2_VERSION_NUM 0x013200
+#define NGHTTP2_VERSION_NUM 0x013400
 
 #endif /* NGHTTP2VER_H */

Utilities/cmnghttp2/lib/nghttp2_net.h

@@ -71,9 +71,9 @@ STIN uint16_t htons(uint16_t hostshort) {
 STIN uint32_t ntohl(uint32_t netlong) {
   uint32_t res;
   unsigned char *p = (unsigned char *)&netlong;
-  res = *p++ << 24;
-  res += *p++ << 16;
-  res += *p++ << 8;
+  res = (uint32_t)(*p++ << 24);
+  res += (uint32_t)(*p++ << 16);
+  res += (uint32_t)(*p++ << 8);
   res += *p;
   return res;
 }
@@ -81,7 +81,7 @@ STIN uint32_t ntohl(uint32_t netlong) {
 STIN uint16_t ntohs(uint16_t netshort) {
   uint16_t res;
   unsigned char *p = (unsigned char *)&netshort;
-  res = *p++ << 8;
+  res = (uint16_t)(*p++ << 8);
   res += *p;
   return res;
 }