Fixes

[joe-bowman]

1. Summary

• Fixes panic on reward allocation in address creation race condition
  • Wrap statement in if ... != nil
• Fixes ICS rewards distribution where multiple transfer channels exist.
  • Ensure we check for STATE_OPEN

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

[codecov-commenter]

Codecov Report

Merging #519 (c001e25) into develop (204ea95) will increase coverage by 0.00%.
The diff coverage is 28.57%.

@@           Coverage Diff            @@
##           develop     #519   +/-   ##
========================================
  Coverage    53.64%   53.65%           
========================================
  Files          186      186           
  Lines        14634    14635    +1     
========================================
+ Hits          7851     7852    +1     
  Misses        6126     6126           
  Partials       657      657           

Flag	Coverage Δ
unittests	53.65% <28.57%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
x/participationrewards/keeper/rewards_holdings.go	82.35% <16.66%> (+0.17%)	⬆️
x/interchainstaking/keeper/ibc_packet_handlers.go	41.70% <100.00%> (ø)