Fix issue with numpy arrays.

[Thrameos]

Fixes #1020

Addresses an issue where the return code on calling len() on an numpy array with no diminsions was failing. To prevent fucture crashes it checks the error sets on exception toPython to make sure the missing error is not eaten which was causing the double throw failure.

[marscher]

Thanks for taking a shot at this. LGTM!

[codecov]

Codecov Report

Merging #1026 (a09f008) into master (7e12ac6) will decrease coverage by 0.04%.
The diff coverage is 30.00%.

@@            Coverage Diff             @@
##           master    #1026      +/-   ##
==========================================
- Coverage   89.08%   89.03%   -0.05%     
==========================================
  Files         112      112              
  Lines       10041    10051      +10     
  Branches     3972     3979       +7     
==========================================
+ Hits         8945     8949       +4     
- Misses        659      663       +4     
- Partials      437      439       +2     

Impacted Files	Coverage Δ
native/common/jp_classhints.cpp	81.28% <12.50%> (-1.13%)	⬇️
native/common/jp_exception.cpp	79.47% <100.00%> (-0.32%)	⬇️
native/common/jp_method.cpp	98.84% <0.00%> (+1.15%)	⬆️

---

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 7e12ac6...a09f008. Read the comment docs.