tidy-up: more whitespace/indent, comments

Also a couple of minor formatting updates in the root `CMakeLists.txt`.
One swap to `#ifdef`.

Closes #17929

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/examples/htmltitle.cpp b/docs/examples/htmltitle.cpp
index 52dbdf153..8d75f588f 100644
--- a/docs/examples/htmltitle.cpp
+++ b/docs/examples/htmltitle.cpp
@@ -144,7 +144,7 @@ static void StartElement(void *voidContext,
     context->title = "";
     context->addTitle = true;
   }
-  (void) attributes;
+  (void)attributes;
 }
 
 //