[clang-tidy] cpp: Turn reference operators to const

Found with cppcoreguidelines-c-copy-assignment-signature

Signed-off-by: Rosen Penev <rosenp@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/plist/Uid.h b/include/plist/Uid.h
index 2d8375b..af6e51d 100644
--- a/include/plist/Uid.h
+++ b/include/plist/Uid.h
@@ -33,7 +33,7 @@ public :
     Uid(Node* parent = NULL);
     Uid(plist_t node, Node* parent = NULL);
     Uid(const Uid& i);
-    Uid& operator=(Uid& i);
+    Uid& operator=(const Uid& i);
     Uid(uint64_t i);
     virtual ~Uid();