various: move const ptr indicator to return value

src/basic/unit-def.c

@@ -58,7 +58,7 @@ const char* unit_dbus_interface_from_type(UnitType t) {
         return table[t];
 }
 
-const char *unit_dbus_interface_from_name(const char *name) {
+const char* unit_dbus_interface_from_name(const char *name) {
         UnitType t;
 
         t = unit_name_to_type(name);