fix autocomplete crash in ycmd

[Presburger]

Signed-off-by: Yusheng.Ma Yusheng.Ma@zilliz.com

[davidhalter]

I like the change. Is there a way we can test that?

[codecov-commenter]

Codecov Report

Merging #1870 (f5faca0) into master (7ff0d2d) will decrease coverage by 0.00%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #1870      +/-   ##
==========================================
- Coverage   94.48%   94.48%   -0.01%     
==========================================
  Files          80       80              
  Lines       11847    11851       +4     
==========================================
+ Hits        11194    11197       +3     
- Misses        653      654       +1     

Impacted Files	Coverage Δ
jedi/inference/gradual/stub_value.py	98.50% <50.00%> (-1.50%)	⬇️
jedi/inference/value/klass.py	98.17% <50.00%> (-0.45%)	⬇️
jedi/plugins/pytest.py	95.00% <0.00%> (+0.83%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[davidhalter]

I'm too lazy to write the test, but I want this fixed either way, so I'm merging. Would still make me happy if someone wrote a test about that. Thanks anyway!

[Presburger]

I'm too lazy to write the test, but I want this fixed either way, so I'm merging. Would still make me happy if someone wrote a test about that. Thanks anyway!

I'm find this bug in my vim's logs, It is hard to write a test about this.