com php-src: fix possible NULL dereference: win32/sendmail.c

Commit:    8dfa428ccdec0755a8d71b6faeade5ddc0145aab
Author:    Anatol Belski <[email protected]>         Wed, 1 Feb 2017 13:43:33 +0100
Parents:   15404bda138ec073dec382ad71472f461305921b
Branches:  PHP-7.0 PHP-7.1 master

Link:       http://git.php.net/?p=php-src.git;a=commitdiff;h=8dfa428ccdec0755a8d71b6faeade5ddc0145aab

Log:
fix possible NULL dereference

Changed paths:
  M  win32/sendmail.c


Diff:
diff --git a/win32/sendmail.c b/win32/sendmail.c
index 28befc3..d460f22 100644
--- a/win32/sendmail.c
+++ b/win32/sendmail.c
@@ -302,7 +302,7 @@ PHPAPI int TSendMail(char *host, int *error, char **error_message,
 			PW32G(mail_host), !INI_INT("smtp_port") ? 25 : INI_INT("smtp_port"));
 		return FAILURE;
 	} else {
-		ret = SendText(RPath, Subject, mailTo, mailCc, mailBcc, data, ZSTR_VAL(headers_trim), ZSTR_VAL(headers_lc), error_message);
+		ret = SendText(RPath, Subject, mailTo, mailCc, mailBcc, data, headers ? ZSTR_VAL(headers_trim) : NULL, headers ? ZSTR_VAL(headers_lc) : NULL, error_message);
 		TSMClose();
 		if (RPath) {
 			efree(RPath);