fix: nil pointer expection issue for wasm header

[izyak]

No description provided.

[codecov]

Codecov Report

Merging #195 (7dd2224) into main (fffa1dc) will decrease coverage by 0.02%.
Report is 5 commits behind head on main.
The diff coverage is 0.00%.

❗ Current head 7dd2224 differs from pull request most recent head 26ed87b. Consider uploading reports for the commit 26ed87b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #195      +/-   ##
==========================================
- Coverage   11.56%   11.55%   -0.02%     
==========================================
  Files          83       83              
  Lines       20011    20029      +18     
==========================================
  Hits         2314     2314              
- Misses      17445    17463      +18     
  Partials      252      252              

Files	Coverage Δ
relayer/chains/icon/icon_chain_processor.go	0.00% <0.00%> (ø)
relayer/chains/wasm/query.go	0.00% <0.00%> (ø)
relayer/chains/icon/utils.go	26.84% <0.00%> (+0.17%)	⬆️
relayer/processor/path_end_runtime.go	0.00% <0.00%> (ø)
relayer/processor/message_processor.go	0.00% <0.00%> (ø)
relayer/chains/wasm/tx.go	0.00% <0.00%> (ø)
relayer/chains/wasm/wasm_chain_processor.go	0.00% <0.00%> (ø)

[viveksharmapoudel]

Looks good