message: fix infinite loop when using fuel for multi-output fusion
diff: @@ -217,9 +217,10 @@ bool GpuMultiOutputFusion::FuseSiblings(HloInstruction* parent) {
  continue;
  }
  if (!ConsumeFuel(name(), [&] {
  - return absl::StrFormat("Not fusing %s and %s.", (*i)->name(),
  + return absl::StrFormat("Not fusing siblings %s and %s.", (*i)->name(),
  (*j)->name());
  })) {
  + ++j;
  continue;
  }
  VLOG(2) << "Fuse siblings " << (*i)->name() << " and " << (*j)->name();
  