tools: Fix small bug in ProtoFileToDotProto am: a5221eeff1 am: a9a2fd14c9
tools: Fix small bug in ProtoFileToDotProto am: a5221eeff1 am: a9a2fd14c9

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1775025

Change-Id: I1d4adfe2024ce9aeb0b4406270f427803d326755

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto