Tatsuhiro NISHIOKA: initialize classes (fixes segfault on exit on MacOS)

src/Main/globals.cxx

@@ -78,10 +78,12 @@ FGGlobals::FGGlobals() :
     time_params( NULL ),
     ephem( NULL ),
     mag( NULL ),
+    matlib( NULL ),
     route_mgr( NULL ),
     current_panel( NULL ),
     soundmgr( NULL ),
     airports( NULL ),
+    runways( NULL ),
     ATC_mgr( NULL ),
     AI_mgr( NULL ),
     controls( NULL ),
@@ -106,7 +108,10 @@ FGGlobals::FGGlobals() :
     mkrlist( NULL ),
     tacanlist( NULL ),
     carrierlist( NULL ),
-    fixlist( NULL )
+    channellist( NULL ),
+    fixlist( NULL ),
+    airwaynet( NULL ),
+    multiplayer_mgr( NULL )
 {
 }