Fixed API bug in async read of IPC metadata

[jorgecarleitao]

It was receiving the reader by value instead of by mutable reference.

[codecov]

Codecov Report

Merging #969 (ba04c64) into main (9ecb8ef) will increase coverage by 0.33%.
The diff coverage is 87.32%.

@@            Coverage Diff             @@
##             main     #969      +/-   ##
==========================================
+ Coverage   71.44%   71.77%   +0.33%     
==========================================
  Files         355      355              
  Lines       19572    19826     +254     
==========================================
+ Hits        13984    14231     +247     
- Misses       5588     5595       +7     

Impacted Files	Coverage Δ
src/io/ipc/read/file_async.rs	60.86% <80.95%> (+0.23%)	⬆️
src/io/ipc/read/reader.rs	77.08% <90.00%> (+1.52%)	⬆️
src/bitmap/utils/slice_iterator.rs	86.20% <0.00%> (-1.73%)	⬇️
src/io/parquet/write/levels.rs	96.37% <0.00%> (+1.69%)	⬆️
src/array/fixed_size_binary/mutable.rs	86.82% <0.00%> (+2.03%)	⬆️
src/array/mod.rs	67.02% <0.00%> (+2.12%)	⬆️
src/array/utf8/mutable.rs	88.67% <0.00%> (+2.47%)	⬆️
src/array/binary/mutable.rs	87.02% <0.00%> (+4.56%)	⬆️

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