fix various issues

- Format issues
- Possible memory leak
- Improve naming and comment issues

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>

programs/ssl/ssl_client2.c

@@ -708,6 +708,7 @@ exit:
     mbedtls_ssl_session_free( &exported_session );
     return( ret );
 }
+
 int main( int argc, char *argv[] )
 {
     int ret = 0, len, tail_len, i, written, frags, retry_left;