Fix a typo

simgear/scene/tgdb/obj.cxx

@@ -1167,7 +1167,7 @@ SGLoadBTG(const std::string& path, const simgear::SGReaderWriterOptions* options
     if (forestNode.valid())  objectLOD->addChild(forestNode.get(), 0, 20000);
     if (buildingNode.valid()) objectLOD->addChild(buildingNode.get(), 0, 20000);
     
-    unsigned nodeMask = SG_NODEMASK_CASTSHADOW_BIT | SG_NODEMASK_RECIEVESHADOW_BIT | SG_NODEMASK_TERRAIN_BIT;
+    unsigned nodeMask = SG_NODEMASK_CASTSHADOW_BIT | SG_NODEMASK_RECEIVESHADOW_BIT | SG_NODEMASK_TERRAIN_BIT;
     objectLOD->setNodeMask(nodeMask);
     transform->addChild(objectLOD);
   }

simgear/scene/util/SGNodeMasks.hxx

@@ -31,7 +31,7 @@
 /// If set, cast shadows
 #define SG_NODEMASK_CASTSHADOW_BIT     simgear::CASTSHADOW_BIT
 /// If set, cast recieves shadows
-#define SG_NODEMASK_RECIEVESHADOW_BIT  simgear::RECEIVESHADOW_BIT
+#define SG_NODEMASK_RECEIVESHADOW_BIT  simgear::RECEIVESHADOW_BIT
 #define SG_NODEMASK_GUI_BIT            simgear::GUI_BIT
 #define SG_NODEMASK_2DPANEL_BIT        simgear::PANEL2D_BIT
 /// If set, the node is pickable