--- ./c14n.c.orig	2026-04-16 17:17:51.049302691 -0500
+++ ./c14n.c	2026-04-16 17:23:08.324022645 -0500
@@ -1047,16 +1047,13 @@
             to ensure that we are forced to go "up" all the time */
             tmp_str_len = xmlStrlen(tmp_str);
             if(tmp_str_len > 1 && tmp_str[tmp_str_len - 2] == '.') {
-                tmp_str2 = xmlStrcat(tmp_str, BAD_CAST "/");
-                if(tmp_str2 == NULL) {
-                    xmlFree(tmp_str);
+                tmp_str = xmlStrcat(tmp_str, BAD_CAST "/");
+                if(tmp_str == NULL) {
                     xmlFree(res);
 
                     xmlC14NErrInternal("processing xml:base attribute - can't modify uri");
                     return (NULL);
                 }
-
-                tmp_str = tmp_str2;
             }
 
             /* build uri */