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-rw-r--r--ext/mbstring/mbstring.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index 501faefe08..bcc95eb9ff 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -2732,7 +2732,7 @@ PHP_FUNCTION(mb_substr_count)
PHP_FUNCTION(mb_substr)
{
char *str;
- zend_string *encoding;
+ zend_string *encoding = NULL;
zend_long from, len;
size_t mblen, real_from, real_len;
size_t str_len;