Fix binary string regex

[nesstord]

PR Details

Change regex value for "bstrUnmarshal" function in "lib.go" file.

Description

The value of the regex "x[a-zA-Z\d]{4}" has been changed to "x[a-fA-F\d]{4}" because hexadecimal values only contain the characters A-F.

Related Issue

#1414

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

[codecov-commenter]

Codecov Report

Merging #1415 (029af0f) into master (5e0953d) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1415      +/-   ##
==========================================
- Coverage   98.53%   98.50%   -0.04%     
==========================================
  Files          31       31              
  Lines       23947    23947              
==========================================
- Hits        23596    23588       -8     
- Misses        232      239       +7     
- Partials      119      120       +1     

Flag	Coverage Δ
unittests	98.50% <ø> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
lib.go	96.78% <ø> (-1.52%)	⬇️

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[xuri]

Thanks for your contribution. I have update test case and made some changes for this based on your branch, and this feature will be released in the next version.