minor cleanup: include orders, end comments etc.

- no code changes

src/utilstrencodings.cpp

@@ -7,10 +7,10 @@
 
 #include "tinyformat.h"
 
-#include <errno.h>
-#include <limits>
 #include <cstdlib>
 #include <cstring>
+#include <errno.h>
+#include <limits>
 
 using namespace std;