another include fix

MarcG-TUE · MarcG-TUE · commit 037d3fbb81b6 · 2024-12-10T08:23:47.000+01:00
diff --git a/src/base/string/cstring.cc b/src/base/string/cstring.cc
@@ -41,6 +41,7 @@
 #include "base/string/cstring.h"
 #include <cctype>
 #include <cstdio>
+#include <sstream>
 #include <string.h>
 
 namespace MaxPlus {
