[tree] add missing header

ferdymercury · guitargeek · commit aa9b98f2baff · 2025-09-11T10:01:41.000+02:00
Compilation error otherwise with libcxx
diff --git a/tree/readspeed/src/ReadSpeed.cxx b/tree/readspeed/src/ReadSpeed.cxx
@@ -29,6 +29,7 @@
 #include <memory>
 #include <numeric> // std::accumulate
 #include <stdexcept>
+#include <exception>
 #include <set>
 #include <iostream>
 
