popContext method
void
popContext()
Implementation
void popContext() {
// Our top context is done; pop it off, and copy the return value in temp 0.
if (stack.length == 1) {
return; // down to just the global stack (which we keep)
}
var context = stack.removeLast();
final result = context.getTemp(0, null);
final storage = context.resultStorage;
context = stack.last;
context.storeValue(storage, result);
}