avoid the downcasting error in Atoi

[codecov[bot]]

Codecov Report

Merging #3287 (2f4fb34) into future/peggy2 (ef044b7) will increase coverage by 0.07%. The diff coverage is 57.69%.

@@                Coverage Diff                @@
##           future/peggy2    #3287      +/-   ##
=================================================
+ Coverage          47.96%   48.03%   +0.07%     
=================================================
  Files                169      169              
  Lines              15024    15020       -4     
=================================================
+ Hits                7206     7215       +9     
+ Misses              7385     7373      -12     
+ Partials             433      432       -1     

Impacted Files	Coverage Δ
cmd/ebrelayer/main.go	0.00% <0.00%> (ø)
cmd/ebrelayer/txs/prophecy.go	0.00% <0.00%> (ø)
cmd/ebrelayer/txs/parser.go	59.37% <100.00%> (+0.83%)	:arrow_up:
x/oracle/types/networkIdentity.go	94.87% <100.00%> (+1.76%)	:arrow_up: