Update SqlMapper.cs

fixed the "UdtTypeName property must be set for UDT parameters" error.
C#  :  .net Framework 4.5.1
Sql server 2012

Dapper NET40/SqlMapper.cs

@@ -378,6 +378,7 @@ void ITypeHandler.SetValue(IDbDataParameter parameter, object value)
                 parameter.Value = SanitizeParameterValue(value);
                 if (parameter is System.Data.SqlClient.SqlParameter)
                 {
+                    ((System.Data.SqlClient.SqlParameter)parameter).SqlDbType = SqlDbType.Udt;
                     ((System.Data.SqlClient.SqlParameter)parameter).UdtTypeName = udtTypeName;
                 }
             }
@@ -5454,11 +5455,11 @@ public ConstructorInfo FindConstructor(string[] names, Type[] types)
                     if (types[i] == typeof(byte[]) && ctorParameters[i].ParameterType.FullName == SqlMapper.LinqBinary)
                         continue;
                     var unboxedType = Nullable.GetUnderlyingType(ctorParameters[i].ParameterType) ?? ctorParameters[i].ParameterType;
-                    if (unboxedType != types[i]
+                    if (unboxedType != types[i]
                         && !(unboxedType.IsEnum() && Enum.GetUnderlyingType(unboxedType) == types[i])
                         && !(unboxedType == typeof(char) && types[i] == typeof(string))
                         && !(unboxedType.IsEnum() && types[i] == typeof(string)))
-                    {
+                    {
                         break;
                     }
                 }