style: remove unnecessary semicolon after namespace (danmar#8410)

While running the build, one can see
```
lib/analyzerinfo.h:38:2: warning: extra ';' [-Wpedantic]
   38 | };
```
This PR fixes that.

Author: vil02

lib/analyzerinfo.h

@@ -35,7 +35,7 @@ struct FileSettings;
 namespace tinyxml2 {
     class XMLDocument;
     class XMLElement;
-};
+}
 
 /// @addtogroup Core
 /// @{