der2pem only works with multiples of 64?

[Stephen Paul Weber]

https://hg.prosody.im/trunk/file/tip/util/x509.lua#l295

When passing in data whose encoded length (minus one?) isn't an exact multiple of 64, this function complains that (#data-1)/64 is not an integer.

[Kim Alvefur]

Most likely a Lua 5.3+ integer issue. Should be easily fixed by
`math.floor()` on the division result. I see no tests for this nor any
uses of this function in Prosody itself, so not surprising that any
breakage has gone unnoticed.

--
Zash