io.hpp: avoid dependency to proj_json_streaming_writer.hpp (fixes #2182) (#2183)

1 files changed, 8 insertions, 6 deletions

diff --git a/src/iso19111/metadata.cpp b/src/iso19111/metadata.cpp
index 6266a86d..8f2601e0 100644
--- a/src/iso19111/metadata.cpp
+++ b/src/iso19111/metadata.cpp
@@ -38,6 +38,8 @@
 #include "proj/internal/internal.hpp"
 #include "proj/internal/io_internal.hpp"
 
+#include "proj_json_streaming_writer.hpp"
+
 #include <algorithm>
 #include <memory>
 #include <string>
@@ -1102,15 +1104,15 @@ void Identifier::_exportToJSON(JSONFormatter *formatter) const {
     const std::string &l_code = code();
     const std::string &l_codeSpace = *codeSpace();
     if (!l_codeSpace.empty() && !l_code.empty()) {
-        auto &writer = formatter->writer();
+        auto writer = formatter->writer();
         auto objContext(formatter->MakeObjectContext(nullptr, false));
-        writer.AddObjKey("authority");
-        writer.Add(l_codeSpace);
-        writer.AddObjKey("code");
+        writer->AddObjKey("authority");
+        writer->Add(l_codeSpace);
+        writer->AddObjKey("code");
         try {
-            writer.Add(std::stoi(l_code));
+            writer->Add(std::stoi(l_code));
         } catch (const std::exception &) {
-            writer.Add(l_code);
+            writer->Add(l_code);
         }
     }
 }