Apply clang-format on some infrequently-updated files

src/init.h

@@ -10,8 +10,9 @@
 
 class CWallet;
 
-namespace boost {
-    class thread_group;
+namespace boost
+{
+class thread_group;
 } // namespace boost
 
 extern CWallet* pwalletMain;
@@ -22,8 +23,7 @@ void Shutdown();
 bool AppInit2(boost::thread_group& threadGroup);
 
 /* The help message mode determines what help message to show */
-enum HelpMessageMode
-{
+enum HelpMessageMode {
     HMM_BITCOIND,
     HMM_BITCOIN_QT
 };