Bug 1496297 - Use |jit-test| skip-if as appropriate in jit-test/tests/saved-stacks/ (r=jorendorff)

// |jit-test| --no-baseline

// |jit-test| --no-baseline; skip-if: !('oomTest' in this)

//

// For background, see the comments for LiveSavedFrameCache in js/src/vm/Stack.h.

//

// interrupted the code at the proper place and revealed the crash, but did so

// with a test that took 90s to run. This test runs in a fraction of a second.

if (!('oomTest' in this))

    quit();

function f() {

  // Ensure that we will try to allocate fresh SavedFrame objects.

  clearSavedFrames();

if (!('oomTest' in this))

    quit();

// |jit-test| skip-if: !('oomTest' in this)

let s = saveStack();

oomTest(() => { saveStack(); });