In kp_configure function of key_provider.c

Memory is allocated to config_parser with wtext->config_parser_open_arg(wtext, NULL, config, &config_parser)

Coverity:

Resource leak

The system resource will not be reclaimed and reused, reducing the future availability of the resource. Leak of memory or pointers to system resources
/ext/test/key_provider/key_provider.c:369: RESOURCE_LEAK 184207 Assuming resource "config_parser" is not freed or pointed-to in unimplemented function "config_parser->next".
/ext/test/key_provider/key_provider.c:399: RESOURCE_LEAK 184207 Assuming resource "config_parser" is not freed or pointed-to in unimplemented function "config_parser->close".
/ext/test/key_provider/key_provider.c:401: RESOURCE_LEAK 184207 Variable "config_parser" going out of scope leaks the storage it points to.