Merge pull request #12 from atonce-original/master

Fix Cell.cs

Author: justdmitry

TonLibDotNet/Cells/Cell.cs

@@ -9,13 +9,14 @@ public class Cell
         public const int MaxBitsCount = 1023;
         public const int MaxRefs = 4;
 
-        public Cell(ReadOnlySpan<byte> content, bool isAugmented, ICollection<Cell>? refs = null)
-            : this(false, refs?.Max(x => x.Level) ?? 0, content, isAugmented, refs)
-        {
-            // Nothing.
-        }
+		public Cell(ReadOnlySpan<byte> content, bool isAugmented, ICollection<Cell>? refs = null)
+	        : this(false, refs != null && refs.Count > 0 ? refs.Max(x => x.Level) : (byte)0, content, isAugmented, refs)
+		{
+			// Nothing.
+		}
+
 
-        public Cell(bool isExotic, byte level, ReadOnlySpan<byte> content, bool isAugmented, ICollection<Cell>? refs = null)
+		public Cell(bool isExotic, byte level, ReadOnlySpan<byte> content, bool isAugmented, ICollection<Cell>? refs = null)
         {
             if (content.Length > MaxContentLength)
             {
@@ -150,4 +151,4 @@ public byte[] Hash()
             return hashValue;
         }
     }
-}
+}