Fix OOB access

[samisalreadytaken]

When the loop fails its i < 48 condition, it will access out of array bounds on GetWeapon right after. This was mostly benign because CHandle m_hMyWeapons[48] is followed by CHandle m_hActiveWeapon in memory, so m_hMyWeapons[48] would access m_hActiveWeapon, which would always be null because the entity can't have an active weapon with no weapons.

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