Change pairs to ipairs

[ceifa]

A micro optimization to save some nanosecs of cpu

[ExtReMLapin]

It's better but not faster as it will not jit compile and outside or jit compiled mode, pairs is faster than ipairs

[Kefta]

This will be faster in x86_64's JIT.

[ceifa]

It's better but not faster as it will not jit compile and outside or jit compiled mode, pairs is faster than ipairs

Didn't know that, does it have a reason to jit compile pairs but not ipairs?

[GitSparTV]

It wouldn't compile in both cases. But pairs apprently is faster in non-JITted code. The possible reason is the implementation, I didn't look deeper but I assume this.

[robotboy655]

Superseded by https://github.com/Facepunch/garrysmod/pull/1609