rpc: ensure we don't attempt to create a routing hint with a nil edge #1324
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
In this commit, we fix an existing panic bug related to the recently
added routing hints feature. If it's the case that the remote node
didn't send us their edge, then when we go to compare the public keys to
see if they match, we may attempt to deref an nil pointer.
In order to fix this, we'll instead check the edgeInfo, which is
guaranteed to also exist if the channel was found in the database. As a
defensive step, before we go to actually aces the struct, we'll check
that's it's non-nil and proceed if it is nil.