add Coverity badge to README.md and update ChangeLog

Signed-off-by: Hans Zandbelt <hans.zandbelt@openidc.com>

ChangeLog

@@ -1,12 +1,13 @@
 12/13/2024
-- avoid potentional memory leak on cURL handle if curl_easy_escape/curl_easy_unescape fails
-- correct the check for the optional token_type parameter returned from a token endpoint request
-- initialize oidc_jose_error_t err variable in oidc_util_create_symmetric_key
-- refactor oidc_util_port_from_host and avoid potential crash on non-conformant literal IPv6 addresses
-- add and use _oidc_strncpy for section key string copy in shm.c
-- correct check for private key return value from oidc_proto_jwt_create_from_first_pkey
-  and avoid NULL pointer dereferencing when no private keys have been configured
-- correct check for *static_template_content in oidc_util_html_send_in_template in util.c
+- address warnings from static code analysis tool Coverity
+  - code: avoid potentional memory leak on cURL handle if curl_easy_escape/curl_easy_unescape fails
+  - code: correct the check for the optional token_type parameter returned from a token endpoint request
+  - code: initialize oidc_jose_error_t err variable in oidc_util_create_symmetric_key
+  - code: refactor oidc_util_port_from_host and avoid potential crash on non-conformant literal IPv6 addresses
+  - code: add and use _oidc_strncpy for section key string copy in shm.c
+  - code: correct check for private key return value from oidc_proto_jwt_create_from_first_pkey
+    and avoid NULL pointer dereferencing when no private keys have been configured
+  - code: correct check for *static_template_content in oidc_util_html_send_in_template in util.c
 
 12/11/2024
 - code: loop over authz arrays with index instead of pointer

README.md

@@ -1,6 +1,7 @@
 [![Build Status](https://github.com/OpenIDC/mod_auth_openidc/actions/workflows/build.yml/badge.svg)](https://github.com/OpenIDC/mod_auth_openidc/actions/workflows/build.yml)
 [<img width="184" height="96" align="right" src="http://openid.net/wordpress-content/uploads/2016/05/oid-l-certification-mark-l-cmyk-150dpi-90mm.jpg" alt="OpenID Certification">](https://openid.net/certification)
 [![CodeQL Analysis](https://github.com/OpenIDC/mod_auth_openidc/actions/workflows/codeql-analysis.yml/badge.svg)](https://github.com/OpenIDC/mod_auth_openidc/actions/workflows/codeql-analysis.yml)
+[![Coverity Scan Build Status](https://scan.coverity.com/projects/31119/badge.svg)](https://scan.coverity.com/projects/openidc-mod_auth_openidc)
 
 mod_auth_openidc
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