Unraveling can be tamed

[wegendt-bosch]

The following code doesn't need unraveling, but is unraveled:

package foo;
import platforms.xdk110;

fn test(): int32 {
	return 1;
}

fn asdf() {
	var x = 0;
	x = test();
}

In general, only function calls that have references that are not refering a variable declaration might need to be unraveled.