fix: weight adjust bug for invalid address

[gxcsoccer]

从日志看，权重调整有点问题，cur weight 是 0，说明地址连不上

[codecov[bot]]

Codecov Report

Merging #29 into master will increase coverage by 0.1%. The diff coverage is 100%.

@@            Coverage Diff            @@
##           master      #29     +/-   ##
=========================================
+ Coverage   98.51%   98.62%   +0.1%     
=========================================
  Files          38       38             
  Lines        1820     1818      -2     
=========================================
  Hits         1793     1793             
+ Misses         27       25      -2

Impacted Files	Coverage Δ
lib/client/address_group.js	98.16% <100%> (+0.89%)	:arrow_up:

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[codecov[bot]]

Codecov Report

Merging #29 into master will increase coverage by <.01%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #29      +/-   ##
==========================================
+ Coverage   98.51%   98.51%   +<.01%     
==========================================
  Files          38       38              
  Lines        1820     1821       +1     
==========================================
+ Hits         1793     1794       +1     
  Misses         27       27

Impacted Files	Coverage Δ
lib/client/address_group.js	97.28% <100%> (+0.01%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 7174ceb...a8b1843. Read the comment docs.

[gxcsoccer]

1.6.2