minor #516 Remove duplicate array items (mrarthur)
minor #516 Remove duplicate array items (mrarthur)

This PR was merged into the 5.2-dev branch.

Discussion
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Remove duplicate array items

Commits
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1d688b7 Duplicate array keys

Dubz/swiftmailer,gencer/swiftmailer,denpamusic/swiftmailer,zghosts/swiftmailer,gburyakovsky/swiftmailer,michabbb-backup/swiftmailer,swiftmailer/swiftmailer,deguif/swiftmailer,jamesggordon/swiftmailer,Dubz/swiftmailer,voku/swiftmailer,gencer/swiftmailer,c960657/swiftmailer,Chhunlong/swiftmailer,kuslahne/swiftmailer,voku/swiftmailer,denpamusic/swiftmailer,handautsav/swiftmailer,deguif/swiftmailer,papagel/swiftmailer,swiftmailer/swiftmailer,Chhunlong/swiftmailer,zghosts/swiftmailer,handautsav/swiftmailer,c960657/swiftmailer,jamesggordon/swiftmailer,gburyakovsky/swiftmailer,kuslahne/swiftmailer,tweakers-dev/swiftmailer,fvosberg/swiftmailer,Rotzbua/swiftmailer,robertklein/swiftmailer,tweakers-dev/swiftmailer,fvosberg/swiftmailer,papagel/swiftmailer,Rotzbua/swiftmailer,robertklein/swiftmailer,michabbb-backup/swiftmailer