Suppress memcpy flaw as checked above.

Author: gmartin82

include/zenoh-pico/protocol/iobuf.h

@@ -82,6 +82,8 @@ static inline void _z_iosli_read_bytes(_z_iosli_t *ios, uint8_t *dst, size_t off
 static inline void _z_iosli_copy_bytes(_z_iosli_t *dst, const _z_iosli_t *src) {
     size_t length = _z_iosli_readable(src);
     assert(dst->_capacity >= length);
+    // SAFETY: Checked by assert above.
+    // Flawfinder: ignore [CWE-120]
     (void)memcpy(dst->_buf, src->_buf + src->_r_pos, length);
     dst->_r_pos = 0;
     dst->_w_pos = length;