fixed compilation warning. (patched by Joe Orton)

diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index dbfbc263de9027d17ae7f411f6a58ef9652e3b76..ec89ca31314e38d981b1bfe12f87a11db3049db4 100644 (file)
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -2284,7 +2284,7 @@ PHP_FUNCTION(mb_substr)
 {
        pval **arg1, **arg2, **arg3, **arg4;
        int argc, from, len, mblen;
-       mbfl_string string, result, *ret;
+       mbfl_string string, result, *ret = NULL;
 
        mbfl_string_init(&string);
        string.no_language = MBSTRG(current_language);
@@ -3726,7 +3726,7 @@ MBSTRING_API int php_mb_gpc_encoding_converter(char **str, int *len, int num, co
                TSRMLS_DC)
 {
        int i;
-       mbfl_string string, result, *ret;
+       mbfl_string string, result, *ret = NULL;
        enum mbfl_no_encoding from_encoding, to_encoding;
        mbfl_buffer_converter *convd;