fix crash for CBasePlayer::Weapon_PunchAngle()

Author: mastercoms

src/game/server/player.cpp

@@ -8791,17 +8791,16 @@ const QAngle& CBasePlayer::GetPunchAngle()
 
 const QAngle& CBasePlayer::Weapon_PunchAngle()
 {
-	QAngle vecCurPunch = GetPunchAngle();
-
 	if ( !IsInPostThink() || m_flInterpolationTime >= 1.0f )
 	{
-		return vecCurPunch;
+		return GetPunchAngle();
 	}
 
 	static QAngle vecReturnPunch;
-	vecReturnPunch.x = m_Local.m_vecPreTickPunchAngle.x + AngleDiff( vecCurPunch.x, m_Local.m_vecPreTickPunchAngle.x ) * m_flInterpolationTime;
-	vecReturnPunch.y = m_Local.m_vecPreTickPunchAngle.y + AngleDiff( vecCurPunch.y, m_Local.m_vecPreTickPunchAngle.y ) * m_flInterpolationTime;
-	vecReturnPunch.z = m_Local.m_vecPreTickPunchAngle.z + AngleDiff( vecCurPunch.z, m_Local.m_vecPreTickPunchAngle.z ) * m_flInterpolationTime;
+	QAngle current = GetPunchAngle();
+	vecReturnPunch.x = m_Local.m_vecPreTickPunchAngle.x + AngleDiff( current.x, m_Local.m_vecPreTickPunchAngle.x ) * m_flInterpolationTime;
+	vecReturnPunch.y = m_Local.m_vecPreTickPunchAngle.y + AngleDiff( current.y, m_Local.m_vecPreTickPunchAngle.y ) * m_flInterpolationTime;
+	vecReturnPunch.z = m_Local.m_vecPreTickPunchAngle.z + AngleDiff( current.z, m_Local.m_vecPreTickPunchAngle.z ) * m_flInterpolationTime;
 	return vecReturnPunch;
 }