release memory on predicate with 0% selectivity

[ritchie46]

When we selected no data from an array, we sliced the buffer keeping all the data in memory. This ensures we are able to free the array data by creating a new empty array.

[codecov]

Codecov Report

Merging #1163 (da64106) into main (8c47777) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #1163      +/-   ##
==========================================
- Coverage   83.58%   83.58%   -0.01%     
==========================================
  Files         365      365              
  Lines       35908    35908              
==========================================
- Hits        30015    30012       -3     
- Misses       5893     5896       +3     

Impacted Files	Coverage Δ
src/compute/filter.rs	69.90% <0.00%> (ø)
src/array/utf8/mod.rs	85.62% <0.00%> (-0.96%)	⬇️
src/io/ipc/read/schema.rs	95.17% <0.00%> (-0.33%)	⬇️
src/bitmap/utils/slice_iterator.rs	98.78% <0.00%> (+1.21%)	⬆️

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[jorgecarleitao]

Oooof, this was a nasty one!