Makefile fix

[ucwong]

No description provided.

[codecov]

Codecov Report

Merging #598 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #598      +/-   ##
==========================================
- Coverage   45.03%   45.01%   -0.03%     
==========================================
  Files         382      382              
  Lines       47557    47557              
==========================================
- Hits        21419    21408      -11     
- Misses      24556    24561       +5     
- Partials     1582     1588       +6     

Impacted Files	Coverage Δ
inference/synapse/local_infer.go	0.00% <ø> (ø)
inference/synapse/synapse.go	0.00% <ø> (ø)
rpc/websocket.go	61.79% <0.00%> (-2.25%)	⬇️
rpc/client.go	74.25% <0.00%> (-1.99%)	⬇️
whisper/whisperv6/message.go	69.94% <0.00%> (-1.16%)	⬇️
trie/trie.go	83.40% <0.00%> (-0.86%)	⬇️
trie/proof.go	77.23% <0.00%> (-0.75%)	⬇️
core/tx_pool.go	76.60% <0.00%> (+0.13%)	⬆️
trie/sync_bloom.go	65.78% <0.00%> (+5.26%)	⬆️

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