Fixed buffer overrun (read only, usually harmless, but sloppy nonetheless).
[BearSSL] / test /
drwxr-xr-x   ..
-rw-r--r-- 187253 test_crypto.c
-rw-r--r-- 11066 test_math.c
-rw-r--r-- 28226 test_speed.c
-rw-r--r-- 31736 test_x509.c
drwxr-xr-x - x509