fix tar extension detection in open code

diff --git a/ext/phar/tar.c b/ext/phar/tar.c
index 7288b3bbffb7f0d16f28e975c061e980e5b04397..343aea58ef7774a6409abfddad4ac31b728c2c03 100644 (file)
--- a/ext/phar/tar.c
+++ b/ext/phar/tar.c
@@ -378,7 +378,7 @@ int phar_open_tarfile(php_stream* fp, char *fname, int fname_len, char *alias, i
                        myphar->ext = memchr(p + 1, '.', (myphar->fname + fname_len) - p - 1);
                }
                if (myphar->ext) {
-                       myphar->ext_len = (myphar->fname + fname_len) - p;
+                       myphar->ext_len = (myphar->fname + fname_len) - myphar->ext;
                }
        }
        myphar->fp = fp;