DPL: add missing header on macOS

ktf · ktf · commit f76678b6f6bf · 2025-01-16T10:28:54.000+01:00
For some reasons this is not included anymore.
diff --git a/Framework/Core/src/DataSpecUtils.cxx b/Framework/Core/src/DataSpecUtils.cxx
@@ -16,6 +16,7 @@
 #include "Headers/DataHeaderHelpers.h"
 
 #include <fmt/format.h>
+#include <sstream>
 #include <cstring>
 #include <cinttypes>
 #include <regex>
