compile failed on * OS X 10.14 CMake

Host: macos-1014-145.macstadium.build.10gen.cc
Project: WiredTiger (develop)
Commit: diff: WT-8257 Verbose Messaging Doc Page (#7241)

• Added doc page on verbose messaging

Updated the doxygen documentation with a new page on WiredTiger's
verbose messaging system. This reflecting the recent changes to the
configuration interface, including a discussion about the verbosity
levels and categories.

• Create a verbose messaging C example

To demonstrate basic usage of the verbose messaging API, created
a small example C program. The program configures a wiredtiger
connection with verbose components. This additionally being useful
to provide code snippets that can be used in an accompanying doc
page. | 26 Nov 21 00:18 UTC
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Task Logs (compile)

Error signature:

[2021/11/26 01:51:45.206] /data/mci/079c52ec57ee6bb0ebece55a94185d41/wiredtiger/examples/c/ex_verbose.c:46:63: error: format specifies type 'void *' but the argument has type 'WT_SESSION *' (aka 'struct __wt_session *') [-Werror,-Wformat-pedantic]
[2021/11/26 01:51:45.206]     printf("WiredTiger Message - Session: %p, Message: %s\n", session, message);
[2021/11/26 01:51:45.206]                                           ~~                  ^~~~~~~
[2021/11/26 01:51:45.213] 1 error generated.