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/automount.h b/src/automount.h
index c6326ed3c2..8334c9752d 100644
--- a/src/automount.h
+++ b/src/automount.h
@@ -36,7 +36,7 @@ typedef enum AutomountState {
 } AutomountState;
 
 struct Automount {
-        Meta meta;
+        Unit meta;
 
         AutomountState state, deserialized_state;