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/timer.h b/src/timer.h
index ad55cf7c87..d5cbc11561 100644
--- a/src/timer.h
+++ b/src/timer.h
@@ -57,7 +57,7 @@ typedef struct TimerValue {
 } TimerValue;
 
 struct Timer {
-        Meta meta;
+        Unit meta;
 
         LIST_HEAD(TimerValue, values);
         usec_t next_elapse;