Improvement in prepared statements logging

In bufferTypeInfoMap , use sizeof(MYSQL_TIME) for the size of these types:
* MYSQL_TYPE_TIMESTAMP
* MYSQL_TYPE_DATE
* MYSQL_TYPE_TIME
* MYSQL_TYPE_DATETIME

Notes:
* sizeof(MYSQL_TIME) is 40
* client library may use MYSQL_TYPE_DATETIME for all of these types

lib/MySQL_Logger.cpp

@@ -64,6 +64,7 @@ struct BufferTypeInfo {
 // Helper lambda to convert binary data to a hex string.
 auto binaryToHex = [](const MYSQL_BIND* bind, unsigned long len, std::string &out) {
 	std::ostringstream oss;
+	oss << "0x";
 	const unsigned char* data = reinterpret_cast<const unsigned char*>(bind->buffer);
 	for (unsigned long i = 0; i < len; i++) {
 		oss << std::setw(2) << std::setfill('0') << std::hex << (int)data[i];
@@ -109,7 +110,7 @@ static const std::unordered_map<unsigned int, BufferTypeInfo> bufferTypeInfoMap
 	},
 	{ MYSQL_TYPE_TIMESTAMP,
 		{ "TIMESTAMP", [](const MYSQL_BIND* bind, unsigned long len, std::string &out) {
-			binaryToHex(bind, len, out);
+			binaryToHex(bind, sizeof(MYSQL_TIME), out);
 		}}
 	},
 	{ MYSQL_TYPE_LONGLONG,
@@ -125,17 +126,17 @@ static const std::unordered_map<unsigned int, BufferTypeInfo> bufferTypeInfoMap
 	},
 	{ MYSQL_TYPE_DATE,
 		{ "DATE", [](const MYSQL_BIND* bind, unsigned long len, std::string &out) {
-			binaryToHex(bind, len, out);
+			binaryToHex(bind, sizeof(MYSQL_TIME), out);
 		}}
 	},
 	{ MYSQL_TYPE_TIME,
 		{ "TIME", [](const MYSQL_BIND* bind, unsigned long len, std::string &out) {
-			binaryToHex(bind, len, out);
+			binaryToHex(bind, sizeof(MYSQL_TIME), out);
 		}}
 	},
 	{ MYSQL_TYPE_DATETIME,
 		{ "DATETIME", [](const MYSQL_BIND* bind, unsigned long len, std::string &out) {
-			binaryToHex(bind, len, out);
+			binaryToHex(bind, sizeof(MYSQL_TIME), out);
 		}}
 	},
 	{ MYSQL_TYPE_YEAR,