fix: small issue with null in bing image response

[mhamilton723]

AB#1208746

[mhamilton723]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov]

Codecov Report

Merging #1067 (35cf5ce) into master (6aecdf1) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1067      +/-   ##
==========================================
+ Coverage   84.94%   84.96%   +0.02%     
==========================================
  Files         206      206              
  Lines        9744     9744              
  Branches      558      558              
==========================================
+ Hits         8277     8279       +2     
+ Misses       1467     1465       -2     

Impacted Files	Coverage Δ
...microsoft/ml/spark/cognitive/SpeechToTextSDK.scala	90.62% <0.00%> (+0.78%)	⬆️

---

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 6aecdf1...35cf5ce. Read the comment docs.