tastudio: be able to load broken greenzone file.

BizHawk.Client.Common/movie/tasproj/TasStateManager.cs

@@ -578,8 +578,8 @@ namespace BizHawk.Client.Common
 		public void Load(BinaryReader br)
 		{
 			States.Clear();
-			//if (br.BaseStream.Length > 0)
-			//{ BaseStream.Length does not return the expected value.
+			try
+			{
 				int nstates = br.ReadInt32();
 				for (int i = 0; i < nstates; i++)
 				{
@@ -592,7 +592,8 @@ namespace BizHawk.Client.Common
 					//States.Add(frame, data);
 					//Used += len;
 				}
-			//}
+			}
+			catch (EndOfStreamException) { }
 		}
 
 		public void SaveBranchStates(BinaryWriter bw)