Common: Fix string_util includes.

src/common/string_util.cpp

@@ -2,9 +2,13 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include <boost/range/algorithm.hpp>
+#include <cctype>
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <boost/range/algorithm/transform.hpp>
 
-#include "common/common_funcs.h"
 #include "common/common_paths.h"
 #include "common/logging/log.h"
 #include "common/string_util.h"
@@ -12,6 +16,7 @@
 #ifdef _MSC_VER
     #include <Windows.h>
     #include <codecvt>
+    #include "common/common_funcs.h"
 #else
     #include <iconv.h>
 #endif