[llvm] [Instrumentation] Fix EdgeCounts vector size in SetBranchWeights (PR #99064)

[Mircea Trofin via llvm-commits]

mtrofin wrote:

> > > @mtrofin a week has passed, can we perhaps enlist a different reviewer?
> 
> > 
> 
> > Let's merge it at this point. Do you have commit rights?
> 
> 
> 
> I do not. I'm not an LLVM developer, just a random person on the internet.

Taking care of it.

https://github.com/llvm/llvm-project/pull/99064