Infinite loops unhandled

[deelawn]

Props to @leohhhn for identifying this.

When the gno vm encounters an infinite loop, it is never able to finish execution. It should probably stop after a certain number of CPU cycles.

Here is an example using recursion:

package main

func main() {
    println(recurse())
}

func recurse() int {
    return recurse()
}

And an example using a for loop:

package main

func main() {
    var n int
    for {
        n++
    }
    println(n)
}

Both of these will cause the vm to hang.

[deelawn]

Decided this is not a bug as this only happens when running gno programs, not from within the keeper when the chain is running