Revert "Drop dead Windows code"

This reverts commit 7f370f8.

Author: Girgias

ext/phar/phar.c

@@ -2220,9 +2220,15 @@ zend_string* phar_split_fname_ex(const char *filename, size_t filename_len, zend
 	if (entry) {
 		if (ext_str[ext_len]) {
 			size_t computed_entry_len = filename_len - arch_len;
-			/* We don't need to unixify the path on Windows,
-			 * as ext_str is derived from filename that was already unixify */
+#ifdef PHP_WIN32
+			/* TODO: can we handle the unixify path in phar_fix_filepath() directly ? */
+			char *fixed_path_for_windows = estrndup(ext_str+ext_len, computed_entry_len);
+			phar_unixify_path_separators(fixed_path_for_windows, computed_entry_len);
+			*entry = phar_fix_filepath(fixed_path_for_windows, computed_entry_len, false);
+			efree(fixed_path_for_windows);
+#else
 			*entry = phar_fix_filepath(ext_str+ext_len, computed_entry_len, false);
+#endif
 		} else {
 			*entry = ZSTR_CHAR('/');
 		}