Fix getItems not returning correct leaf_data_ variant

Change-Id: I7d008606be7a6f874ecb2e7c22638ea04d4f7639
diff --git a/src/sysrepo_access.cpp b/src/sysrepo_access.cpp
index eec6d6c..b01b484 100644
--- a/src/sysrepo_access.cpp
+++ b/src/sysrepo_access.cpp
@@ -35,7 +35,7 @@
     case SR_STRING_T:
         return std::string(value->data()->get_string());
     case SR_ENUM_T:
-        return std::string(value->data()->get_enum());
+        return enum_{std::string(value->data()->get_enum())};
     case SR_DECIMAL64_T:
         return value->data()->get_decimal64();
     case SR_CONTAINER_T: