UBsan fix for RNG

Add an explicit cast to uint32_t in inl_erand48() to silence a runtime error from the undefined behaviour sanitizer.

Fixes #606 (closed).

I am getting fed up with UBsan reporting this continuously and hence generating too much noise.

LGTM, assuming you tested this and it does silence the warning :)

assigned to @pdraper

I was worried that the cast might void some of the effect of bit-shifting.

changed the description

Looks good to me as well. Accepting.

merged

mentioned in commit 675bafff