Folding line when EOL is on 75th character boundary

[1007tejas]

Server: Debian 9
Install: Composer package jeroendesloovere / vcard
Framework: Laravel 5.8
Issue: vcard.php function: fold

Folding lines when the end of line character(s) is crosses the 75th character boundary.
In this example the second label creates a blank fold.
------------------------ Original code creates a fold

LABEL:333 LANCASTER AVE APT 3\nFORT WORTH\nTX\n12345\nUSA
LABEL:123 LONGFORD DR UNIT 12\nDALLAS\nTX\n54321\nUNITED STATES OF AMERICA


 
PHOTO;ENCODING=b;TYPE=JPEG:/9j/4AAQSkZJRgABAQEASABIAAD//gATQ3JlYXRlZCB3aXRo

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Adding a test that trims the text before checking string length passes, returning the example Label
with original eol intact and no fold.

------------------------ After trim test no fold

LABEL:333 LANCASTER AVE APT 3\nFORT WORTH\nTX\n12345\nUSA
LABEL:123 LONGFORD DR UNIT 12\nDALLAS\nTX\n54321\nUNITED STATES OF AMERICA
PHOTO;ENCODING=b;TYPE=JPEG:/9j/4AAQSkZJRgABAQEASABIAAD//gATQ3JlYXRlZCB3aXRo

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