func(proposal,chainid): optimize the return value of chainid

[yanghang8612]

No description provided.

[codecov-commenter]

Codecov Report

Merging #4863 (716ab53) into release_v4.7.0 (eb0065c) will decrease coverage by 0.15%.
The diff coverage is 70.73%.

@@                 Coverage Diff                  @@
##             release_v4.7.0    #4863      +/-   ##
====================================================
- Coverage             53.52%   53.36%   -0.16%     
+ Complexity             8028     8010      -18     
====================================================
  Files                   830      830              
  Lines                 48825    48864      +39     
  Branches               5355     5358       +3     
====================================================
- Hits                  26132    26078      -54     
- Misses                20649    20732      +83     
- Partials               2044     2054      +10     

Impacted Files	Coverage Δ
...rc/main/java/org/tron/core/vm/program/Program.java	63.40% <0.00%> (+0.25%)	⬆️
common/src/main/java/org/tron/core/Constant.java	50.00% <ø> (ø)
framework/src/main/java/org/tron/core/Wallet.java	18.21% <0.00%> (-0.03%)	⬇️
...rc/main/java/org/tron/core/utils/ProposalUtil.java	34.13% <33.33%> (-0.25%)	⬇️
...ava/org/tron/common/parameter/CommonParameter.java	55.87% <50.00%> (-0.04%)	⬇️
.../src/main/java/org/tron/core/config/args/Args.java	59.81% <66.66%> (-1.81%)	⬇️
...rc/main/java/org/tron/core/vm/config/VMConfig.java	91.66% <75.00%> (-1.20%)	⬇️
...ain/java/org/tron/core/vm/config/ConfigLoader.java	87.50% <100.00%> (+1.13%)	⬆️
...va/org/tron/core/store/DynamicPropertiesStore.java	97.26% <100.00%> (+0.02%)	⬆️
.../java/org/tron/core/consensus/ProposalService.java	92.50% <100.00%> (+0.14%)	⬆️
... and 22 more

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[CodeNinjaEvan]

LGTM