fix bug# 13017 - patch from tsukada@fminn.nagano.nagano.jp

diff --git a/ext/mbstring/mbfilter.c b/ext/mbstring/mbfilter.c
index e5c896a0875ade474cc71ddef61f2640e9d4f4aa..00321673b9835e01ba7bb383e25a8398b942d705 100644 (file)
--- a/ext/mbstring/mbfilter.c
+++ b/ext/mbstring/mbfilter.c
@@ -7061,10 +7061,10 @@ mbfl_strimwidth(
        n = string->len;
        if (p != NULL) {
                while (n > 0) {
+                       n--;
                        if ((*encoder->filter_function)(*p++, encoder) < 0) {
                                break;
                        }
-                       n--;
                }
                mbfl_convert_filter_flush(encoder);
                if (pc.status != 0 && mkwidth > 0) {