### Describe what you were doing when the bug occurred:
1. I did profiling on a list, that gets updated on each pagination api call.
2. Once the profiling was done, I moved around in the Profiler to view the Flamegraph
3. Moving to second capture, the Profiler crashed.


**DevTools version**: 4.6.0-6cceaeb67

```
Component stack: in ec
    in div
    in div
    in div
    in So
    in Unknown
    in n
    in Unknown
    in div
    in div
    in rl
    in Ze
    in fn
    in Ga
    in _s
```
break;
            default:
              if (typeof overrideProps === 'function') {
                overrideProps(fiber, path, value);
              }
              break;
          }
          break;
        case 'state':
          switch (fiber.tag) {
            case ClassComponent:
              setInObject(instance.state, path, value);
              instance.forceUpdate();
              break;
          }
          break;
      }
    }
  }
  type CommitProfilingData = {|
    changeDescriptions: Map<number, ChangeDescription> | null,
    commitTime: number,
    durations: Array<number>,
    effectDuration: number | null,
    maxActualDuration: number,
    passiveEffectDuration: number | null,
    priorityLevel: string | null,
    updaters: Array<SerializedElement> | null,
  |};
  type CommitProfilingMetadataMap = Map<number, Array<CommitProfilingData>>;