Type info uses slices now! Fixed a case of slice needing to have a completed type

examples/unions.core

@@ -7,9 +7,6 @@ C :: struct
 	a: int
 	b: int
 
-Test :: struct
-	a: int
-
 main :: (argc: int, argv: **char): int
 	memes: U
 	memes.b = 10
@@ -17,7 +14,14 @@ main :: (argc: int, argv: **char): int
 	Assert(memes.a != 0)
 
 	compound: U = {b = 10.0}
-	c2: C = {b = 10}
+	Assert(compound.b == 10)
+
+	t := U
+	ti := GetTypeInfo(t)
+	Assert(ti.size == SizeOf(U))
+
+	
+
 
 /* @reproduction @todo
 ```