Fix crashing of server.

[mgautierfr]

Fixes kiwix/java-libkiwix#51

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (Issue#3216@acf45a0). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

@@              Coverage Diff              @@
##             Issue#3216    #3467   +/-   ##
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  Coverage              ?   49.66%           
  Complexity            ?     1020           
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  Files                 ?      284           
  Lines                 ?    10135           
  Branches              ?     1352           
=============================================
  Hits                  ?     5034           
  Misses                ?     4302           
  Partials              ?      799           

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[MohitMaliFtechiz]

@mgautierfr Thanks, I have tested this PR fix in #3216 and now the server is working fine with these changes.

[MohitMaliFtechiz]

@mgautierfr, @kelson42
PR looks good to me as it fixes the server issue, but we have adapted new wrapper changes in #3217 so we should close this PR because we already have these changes in #3217.

[MohitMaliFtechiz]

We have these changes in #3217 so now this PR is duplicate so i am closing this.