game: fix ent_create crash if entity model is NULL

game/server/ai_basenpc.cpp

@@ -6560,6 +6560,12 @@ float CAI_BaseNPC::ThrowLimit(	const Vector &vecStart,
 //-----------------------------------------------------------------------------
 void CAI_BaseNPC::SetupVPhysicsHull()
 {
+	if( GetModelPtr() == NULL )
+	{
+		UTIL_Remove( this );
+		return;
+	}
+
 	if ( GetMoveType() == MOVETYPE_VPHYSICS || GetMoveType() == MOVETYPE_NONE )
 		return;
 

public/bone_setup.cpp

@@ -5943,6 +5943,8 @@ const char *Studio_GetDefaultSurfaceProps( CStudioHdr *pstudiohdr )
 
 float Studio_GetMass( CStudioHdr *pstudiohdr )
 {
+	if( pstudiohdr == NULL ) return 0.f;
+
 	return pstudiohdr->mass();
 }