Fix/gh 982 line chars

[joshcarp]

So message types for filedescriptors field types and (all?) other types seem to use slightly different source code location paths

The issue in #982 was that the int32 path did not exist from the message type:

int32 path for message:

path key [4 0 2 0 5]

Keys that existed within the filedescriptor sourcecodelocations:
[4 0 2 0]
[4 0 2 0 6]
[4 0 2 0 1]
[4 0 2 0 3]
[]
[12]
[4 0]
[4 0 1]

above the key 4 0 2 0 5 does not exist, unlike for an int32 which does:

path key [4 0 2 0 5]

[4 0 2 0 1]
[4 0 2 0 3]
[]
[12]
[4 0]
[4 0 1]
[4 0 2 0]
[4 0 2 0 5]

Fixes #982

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