Fix build failure on Windows.

Author: ChenPi11

lib/locale_charset.c

@@ -120,14 +120,16 @@ _CPPP_API const char *locale_charset()
     if (p == NULL)
     {
         // No dot.
-        return DEFAULT_CHARSET;
+        return REICONV_DEFAULT_CHARSET;
     }
 
     // Split the locale into two parts.
     codeset = p + 1;
     return codeset;
 
+#if locale_table_defined
 done_table_lookup:
+#endif
 
 #if IS_DARWIN7
     /* Mac OS X sets MB_CUR_MAX to 1 when LC_ALL=C, and "UTF-8"

lib/localecharset/lc_types.h

@@ -24,7 +24,7 @@
 #ifndef _LC_TYPES_H_
 #define _LC_TYPES_H_
 
-#define DEFAULT_CHARSET "UTF-8"
+#define REICONV_DEFAULT_CHARSET "UTF-8"
 
 struct locale_table_entry
 {

lib/localecharset/windows_getcp.h

@@ -32,7 +32,7 @@
 
 #include <Windows.h>
 
-static const char *windows_getcp(char *resultbuf)
+static const char *windows_getcp()
 {
 #ifdef _CONSOLE
     UINT cp = GetConsoleOutputCP();