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/path.h b/src/path.h
index 8b3c0bc119..04d43c8d51 100644
--- a/src/path.h
+++ b/src/path.h
@@ -70,7 +70,7 @@ static inline bool path_spec_owns_inotify_fd(PathSpec *s, int fd) {
 }
 
 struct Path {
-        Meta meta;
+        Unit meta;
 
         LIST_HEAD(PathSpec, specs);