Update RSyntaxTextArea.java

[ivanschehl]

Avoid showing MatchBracketPopup if RSyntaxTextArea not in focus. I encountered this kind of a defect/bug that when navigating in multiple step wizard the popup bracket hint of one step appears on a different step.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 80.35%. Comparing base (69b3c7d) to head (714c8b6).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...a/org/fife/ui/rsyntaxtextarea/RSyntaxTextArea.java	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #577   +/-   ##
=========================================
  Coverage     80.34%   80.35%           
  Complexity     7777     7777           
=========================================
  Files           178      178           
  Lines         30224    30225    +1     
  Branches       3907     3908    +1     
=========================================
+ Hits          24283    24286    +3     
+ Misses         4267     4265    -2     
  Partials       1674     1674           

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[bobbylight]

Thanks for the fix!