unit: remove union Unit

Now that objects of all unit types are allocated the exact amount of
memory they need, the Unit union has lost its purpose. Remove it.

"Unit" is a more natural name for the base unit class than "Meta", so
rename Meta to Unit.

Access to members of the base class gets simplified.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/target.h b/src/target.h
index b1d055f9a8..5b97c86fbf 100644
--- a/src/target.h
+++ b/src/target.h
@@ -34,7 +34,7 @@ typedef enum TargetState {
 } TargetState;
 
 struct Target {
-        Meta meta;
+        Unit meta;
 
         TargetState state, deserialized_state;
 };