Add /snap/bin to PATH even if only /snap exists
Add /snap/bin to PATH even if only /snap exists

/snap/bin is created later on by snapd, so lets just assume that it will
exist and append /snap/bin so long as /snap exists.

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>

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