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core: Add missed internal comment about idle mode workaround 

This should have been included in #8746 but wasn't.
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Eric Anderson 2022-06-06 09:34:33 -07:00 committed by GitHub
parent c48b01a46c
commit 9a09021897
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core/src/main/java/io/grpc/internal/ManagedChannelImpl.java
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@ -349,6 +349,9 @@ final class ManagedChannelImpl extends ManagedChannel implements
@Override @Override
public void run() { public void run() {
// Workaround timer scheduled while in idle mode. This can happen from handleNotInUse() after
// an explicit enterIdleMode() by the user. Protecting here as other locations are a bit too
// subtle to change rapidly to resolve the channel panic. See #8714
if (lbHelper == null) { if (lbHelper == null) {
return; return;
} }