fix string is optional, set default length, thanks laruence

diff --git a/ext/standard/head.c b/ext/standard/head.c
index 28fcb6b6861eb85e0207f0ffbc8e30aa8136953a..56f02a3989e7f2a24f7c6e9c5f46080e2b8e25b3 100644 (file)
--- a/ext/standard/head.c
+++ b/ext/standard/head.c
@@ -56,7 +56,7 @@ PHP_FUNCTION(header)
 PHP_FUNCTION(header_remove)
 {
        sapi_header_line ctr = {0};
-       size_t len;
+       size_t len = 0;
 
        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &ctr.line,
                                  &len) == FAILURE)