moment.duration.format error with zero-value tokens and significant digits on HTC mobile browser

[jsmreese]

When using significant digits and moment.duration.format, tokens that have zero value are rendered as 0.0 instead of 0.

This occurs on the HTC One emulator on BrowserStack, Android 4.4. I've not yet tested on an actual HTC device.

[jsmreese]

Verified that issue is present on a physical HTC One device.

[jsmreese]

equal(moment.duration(10, "seconds").format("h[h] m[m] s[s]",
{
    useSignificantDigits: true,
    trim: false
}), "0h 0m 10s"); // Passes on HTC One
equal(moment.duration(10, "seconds").format("h[h] m[m] s[s]",
{
    useSignificantDigits: true,
    precision: 4,
    trim: false
}), "0h 0m 10s"); // Fails on HTC One