Clear SuggestionsPopupWindow.mSpansLengths after it is used.
Clear SuggestionsPopupWindow.mSpansLengths after it is used.

This is a no risk optimization that minimizes the time when
strong references to SuggestionSpan and Integer instances are
hold in SuggestionsPopupWindow.mSpansLengths.

SuggestionsPopupWindow.mSpansLengths are used while the given
SuggestionSpans array is being sorted. We don't need to keep
object references there after the sort is completed.

No user visible change is intended with this CL.

Change-Id: I7882d741c08d07ad7f905ad1d171c0d13da39397

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base