MAX_ENCODING_SIZE -> MAX_CP_LEN

Author: serhiy-storchaka

Modules/_localemodule.c

@@ -89,16 +89,16 @@ copy_grouping(const char* s)
 
 #if defined(MS_WINDOWS)
 
-// The number of elements in the szCodePage field
+// 16 is the number of elements in the szCodePage field
 // of the __crt_locale_strings structure.
-#define MAX_ENCODING_SIZE 16
+#define MAX_CP_LEN 15
 
 static int
 check_locale_name(const char *locale, const char *end)
 {
     size_t len = end ? (size_t)(end - locale) : strlen(locale);
     const char *dot = memchr(locale, '.', len);
-    if (dot && locale + len - dot > MAX_ENCODING_SIZE) {
+    if (dot && locale + len - dot - 1 > MAX_CP_LEN) {
         return -1;
     }
     return 0;