std.h in passenger-6.0.23

- old
+ new

@@ -14,9 +14,10 @@
 #include <boost/predef/library/std/cxx.h>
 #include <boost/predef/library/std/dinkumware.h>
 #include <boost/predef/library/std/libcomo.h>
 #include <boost/predef/library/std/modena.h>
 #include <boost/predef/library/std/msl.h>
+#include <boost/predef/library/std/msvc.h>
 #include <boost/predef/library/std/roguewave.h>
 #include <boost/predef/library/std/sgi.h>
 #include <boost/predef/library/std/stdcpp3.h>
 #include <boost/predef/library/std/stlport.h>
 #include <boost/predef/library/std/vacpp.h>