Update ext/mbstring/libmbfl/mbfl/mbfl_encoding.c

Co-authored-by: Niels Dossche <7771979+nielsdos@users.noreply.github.com>

Author: youkidearitai

ext/mbstring/libmbfl/mbfl/mbfl_encoding.c

@@ -353,7 +353,7 @@ const mbfl_encoding *mbfl_name2encoding_ex(const char *name, size_t name_len)
 	/* search MIME charset name */
 	for (encoding = mbfl_encoding_ptr_list; *encoding; encoding++) {
 		if ((*encoding)->mime_name) {
-			if (strcasecmp((*encoding)->mime_name, name) == 0 && strlen((*encoding)->mime_name) == name_len) {
+			if (strcasecmp((*encoding)->mime_name, name) == 0 && (*encoding)->mime_name[name_len] == '\0') {
 				return *encoding;
 			}
 		}
@@ -363,7 +363,7 @@ const mbfl_encoding *mbfl_name2encoding_ex(const char *name, size_t name_len)
 	for (encoding = mbfl_encoding_ptr_list; *encoding; encoding++) {
 		if ((*encoding)->aliases) {
 			for (const char **alias = (*encoding)->aliases; *alias; alias++) {
-				if (strncasecmp(name, *alias, name_len) == 0 && strlen(*alias) == name_len) {
+				if (strncasecmp(name, *alias, name_len) == 0 && (*alias)[name_len] == '\0') {
 					return *encoding;
 				}
 			}