retry unverified blocks after get_miner_data RPC

src/p2pool.cpp

@@ -1939,6 +1939,12 @@ void p2pool::parse_get_miner_data_rpc(const char* data, size_t size)
 	}
 
 	handle_miner_data(minerData);
+
+	// Retry any unverified sidechain blocks now that new mainchain difficulty data is available.
+	// The ZMQ path does this at p2pool.cpp:692; the RPC path needs it too so blocks waiting on
+	// the current mining height's difficulty don't stall until the next ZMQ event fires.
+	m_sideChain->retry_unverified_blocks();
+
 	if (m_serversStarted.load() == 0) {
 		download_block_headers1(minerData.height);
 	}