Correct encoding of quote and add a unit test

[tledoux]

Fixes #471

[codecov]

Codecov Report

Merging #472 into integration will increase coverage by 0.18%.
The diff coverage is 100%.

@@                Coverage Diff                @@
##             integration     #472      +/-   ##
=================================================
+ Coverage          49.36%   49.54%   +0.18%     
- Complexity           969      974       +5     
=================================================
  Files                 55       55              
  Lines               7666     7666              
  Branches            1392     1392              
=================================================
+ Hits                3784     3798      +14     
+ Misses              3422     3412      -10     
+ Partials             460      456       -4

Impacted Files	Coverage Δ	Complexity Δ
...in/java/edu/harvard/hul/ois/jhove/HandlerBase.java	74.61% <100%> (+7.25%)	51 <0> (+5)	⬆️

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[tledoux]

@carlwilson : Hi, just a little squash to make the merge easier.

This correct a long standing bug that has been revealed by the new error messages...