Optimize GC for PropSrc.

Assets/Cryville/Crtr/Judge.cs

@@ -244,17 +244,17 @@ namespace Cryville.Crtr {
 					_buf = null;
 				}
 			}
-			protected override unsafe void InternalGet(out int type, out byte[] value) {
+			protected override unsafe int InternalGet() {
 				var src = _cb();
 				int strlen = src.Length;
-				type = PdtInternalType.String;
-				value = _pool.Rent(sizeof(int) + strlen * sizeof(char));
-				fixed (byte* _ptr = value) {
+				buf = _pool.Rent(sizeof(int) + strlen * sizeof(char));
+				fixed (byte* _ptr = buf) {
 					char* ptr = (char*)(_ptr + sizeof(int));
 					*(int*)_ptr = strlen;
 					int i = 0;
 					foreach (var c in src) ptr[i++] = c;
 				}
+				return PdtInternalType.String;
 			}
 		}
 		#endregion