Tweak LLDynamicArrayIndexed to not abuse its std::vector.
Tweak LLDynamicArrayIndexed to not abuse its std::vector.

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm