fix(block_sync): check that next block has height +1 #5111
Merged
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Context
Closes #5072.
After more than 2 blocks was shared through block stream this problem appeared.
Solution
Bug was that code checked that
blocks[i].height -1 == blocks[i + 1].height
, when should beblcoks[i].height + 1 == blocks[i + 1].height
.Tests were added to check this validation.