fixed a initialization bug in euc-tw.

diff --git a/ext/mbstring/mbfilter_tw.c b/ext/mbstring/mbfilter_tw.c
index 720abedee3edbce030e9acdccceb5ce3cf58be17..bdad919cff96162acaf434334a6c699202bb7eda 100644 (file)
--- a/ext/mbstring/mbfilter_tw.c
+++ b/ext/mbstring/mbfilter_tw.c
@@ -89,6 +89,7 @@ mbfl_filt_conv_euctw_wchar(int c, mbfl_convert_filter *filter TSRMLS_DC)
                break;
 
        case 2: /* got 0x8e,  first char */
+               c1 = filter->cache;
                if ((c >= 0 && c < 0x21) || c == 0x7f) {                /* CTLs */
                        CK((*filter->output_function)(c, filter->data TSRMLS_CC));
                        filter->status = 0;