unit: avoid re-definition of enum for older gcc versions

<koen> | ./src/shared/unit-name.h:29:23: error: redefinition of typedef 'UnitType'
<koen> | ./src/core/unit.h:30:23: note: previous declaration of 'UnitType' was here

diff --git a/src/core/unit.h b/src/core/unit.h
index 9d75e02532a40776b8b0374e2a551edf398855ee..61a85d7bee9ade6cd1f1c077898ed7707b62dd9a 100644 (file)
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -27,7 +27,6 @@
 
 typedef struct Unit Unit;
 typedef struct UnitVTable UnitVTable;
-typedef enum UnitType UnitType;
 typedef enum UnitActiveState UnitActiveState;
 typedef enum UnitDependency UnitDependency;
 typedef struct UnitRef UnitRef;