cms: Do not try to check binary format on stdin
Fixes
@@ -278,6 +278,8 @@ static void warn_binary(const char *file)
unsigned char linebuf[1024], *cur, *end;
int len;
+ if (file == NULL)
+ return; /* cannot give a warning for stdin input */
if ((bio = bio_open_default(file, 'r', FORMAT_BINARY)) == NULL)
return; /* cannot give a proper warning since there is an error */
while ((len = BIO_read(bio, linebuf, sizeof(linebuf))) > 0) {
