Fix cppcheck warnings from params-file changes

src/p2pool.cpp

@@ -1985,24 +1985,24 @@ void p2pool::parse_get_miner_data_rpc(const char* data, size_t size)
 // At current HF (10), block_header has no pricing_record (HF_VERSION_ENABLE_ORACLE = 255).
 static bool extract_protocol_tx_from_blob(const uint8_t* data, size_t size, std::vector<uint8_t>& protocol_tx_out)
 {
-	const uint8_t* const end = data + size;
+	const uint8_t* const blob_end = data + size;
 
 	// Helper: skip a varint, return false on failure
-	auto skip_varint = [&data, end]() -> bool {
+	auto skip_varint = [&data, blob_end]() -> bool {
 		uint64_t dummy;
-		data = readVarint(data, end, dummy);
+		data = readVarint(data, blob_end, dummy);
 		return data != nullptr;
 	};
 
 	// Helper: read a varint value
-	auto read_varint = [&data, end](uint64_t& val) -> bool {
-		data = readVarint(data, end, val);
+	auto read_varint = [&data, blob_end](uint64_t& val) -> bool {
+		data = readVarint(data, blob_end, val);
 		return data != nullptr;
 	};
 
 	// Helper: skip N bytes
-	auto skip_bytes = [&data, end](size_t n) -> bool {
-		if (static_cast<size_t>(end - data) < n) return false;
+	auto skip_bytes = [&data, blob_end](size_t n) -> bool {
+		if (static_cast<size_t>(blob_end - data) < n) return false;
 		data += n;
 		return true;
 	};
@@ -2016,7 +2016,7 @@ static bool extract_protocol_tx_from_blob(const uint8_t* data, size_t size, std:
 	// Helper: skip a single tx output (amount varint + type tag + type-specific data)
 	auto skip_tx_output = [&]() -> bool {
 		if (!skip_varint()) return false; // amount
-		if (data >= end) return false;
+		if (data >= blob_end) return false;
 		uint8_t tag = *(data++);
 		switch (tag) {
 		case 2: // txout_to_key: key(32) + asset_type(string)
@@ -2051,7 +2051,7 @@ static bool extract_protocol_tx_from_blob(const uint8_t* data, size_t size, std:
 		uint64_t vin_count;
 		if (!read_varint(vin_count)) return false;
 		for (uint64_t i = 0; i < vin_count; ++i) {
-			if (data >= end) return false;
+			if (data >= blob_end) return false;
 			uint8_t vin_tag = *(data++);
 			if (vin_tag == 0xff) {
 				// txin_gen: height varint

src/p2pool.h

@@ -40,7 +40,7 @@ struct PoolBlock;
 class p2pool : public MinerCallbackHandler, public nocopy_nomove
 {
 public:
-	p2pool(const std::vector<std::vector<std::string>>& args);
+	explicit p2pool(const std::vector<std::vector<std::string>>& args);
 	~p2pool() override;
 
 	int run();

src/params.h

@@ -34,7 +34,7 @@ struct Params
 	FORCEINLINE Params() {}
 #endif
 
-	Params(const std::vector<std::vector<std::string>>& args);
+	explicit Params(const std::vector<std::vector<std::string>>& args);
 
 	bool valid() const;