fix: xds-client LrsCallState statsTimer memory leak

[gfrancz]

No description provided.

[linux-foundation-easycla]

• ✅login: gfrancz / (fdb6064)
• ✅login: gfrancz / (fdb6064, 6dc3abe)

The committers listed above are authorized under a signed CLA.

[murgatroid99]

Build error:

src/xds-client.ts:693:7 - error TS2322: Type 'void' is not assignable to type 'Timeout | null'.

693       this.statsTimer = clearInterval(this.statsTimer);
          ~~~~~~~~~~~~~~~

Please fix, and ensure that the code compiles before pushing, and please sign the CLA.

[gfrancz]

Ok sorry about that -- CLA is signed, I've confirmed it builds.

[ws-gregm]

@murgatroid99 It appears that this PR and this one are blocked on Windows Tests which is failing because of timeout with test. I'm looking into it but I suspect it's a false fail.

[murgatroid99]

Ignore the Windows tests. The test results are fine

[murgatroid99]

Thank you for the fix.