Try to fix MSVC build.

MSVC wants to see the full "SGVec3" class spec, not just the fwd
declaration provided by SGMathFwd.hxx.

diff --git a/src/GUI/menubar.cxx b/src/GUI/menubar.cxx
index 444795fd592d938fec73b72105a9bfddc1de5f12..3c9d6e2d2468872a11a91eaa189bad33132368e4 100644 (file)
--- a/src/GUI/menubar.cxx
+++ b/src/GUI/menubar.cxx
@@ -6,6 +6,7 @@
 #include "menubar.hxx"
 #include <Main/locale.hxx>
 #include <Main/globals.hxx>
+#include <simgear/math/SGMath.hxx>
 
 FGMenuBar::FGMenuBar()
 {