Add src/node/* code to node:: namespace

src/rest.cpp

@@ -32,6 +32,11 @@
 
 #include <univalue.h>
 
+using node::GetTransaction;
+using node::IsBlockPruned;
+using node::NodeContext;
+using node::ReadBlockFromDisk;
+
 static const size_t MAX_GETUTXOS_OUTPOINTS = 15; //allow a max of 15 outpoints to be queried at once
 static constexpr unsigned int MAX_REST_HEADERS_RESULTS = 2000;