- fix Fixed NULL pointer dereference in ZipArchive::getArchiveComment, (CVE-2010-3709), report&patch from Maksymilian Arciemowicz

ext/zip/php_zip.c

@@ -1974,6 +1974,9 @@ static ZIPARCHIVE_METHOD(getArchiveComment)
 	}
 
 	comment = zip_get_archive_comment(intern, &comment_len, (int)flags);
+	if(comment==NULL) {
+		RETURN_FALSE;
+	}
 	RETURN_STRINGL((char *)comment, (long)comment_len, 1);
 }
 /* }}} */