ART: Fix unchecked register index validity

The static check of index validity is against the type given by
the instruction, e.g., boolean for SPUT_BOOLEAN, but the target_type
is the resolved field type and can differ. An additional check is
necessary to avoid a read out of bounds.

Bug: 17411109
Change-Id: Ie4ed8bbda79f3f6403a24e727450a943447aa71d