tree b0503d70a785ff56a70befabbd6d8c18aca42076
parent 397ff901849f6d341d0a1fc7c8bf41c89e7a0dd7
author Joe Tsai <joetsai@digital-static.net> 1521066070 -0700
committer GitHub <noreply@github.com> 1521066070 -0700
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proto: ignore unknown fields in map entries (#561)

A proto map entry is conceptually a message with two fields.
In the same way that unknown fields don't cause a parsing error,
map parsing should ignore unknown fields and tags.
Similarly, it treats a missing field as the zero value.

Fixes #403