wallet2: Missing underflow check on low heights
Lack of it results in `m_refresh_from_block_height` being < 0 (18446744...) on low heights, which blocks `process_new_blockchain_entry` and never process coins on heights less than blocks_per_month. Follow-up to #2258
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@ -2255,7 +2255,7 @@ crypto::secret_key wallet2::generate(const std::string& wallet_, const std::stri
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// Set blockchain height calculated from current date/time
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uint64_t approx_blockchain_height = get_approximate_blockchain_height();
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if(approx_blockchain_height > 0) {
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m_refresh_from_block_height = approx_blockchain_height - blocks_per_month;
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m_refresh_from_block_height = approx_blockchain_height >= blocks_per_month ? approx_blockchain_height - blocks_per_month : 0;
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}
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}
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bool r = store_keys(m_keys_file, password, false);
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