2.0.15 - Minor issue with php 7

[shawnb61]

Errors in the error log:

Code Select Expand

8: Only variables should be passed by reference
/xxxx/xxxx/public_html/van20/Sources/Subs-Sound.php Line: 39

It happens only with PHP 7.0 & 7.1.

To reproduce, click on the "Listen to the Letters" link during registration. 

Everything actually works OK, but the errors are logged in the background. 

[Herrie]

This was fixed for 2.1, backport to 2.0.15 of the fix should be easy:
hxxp:github.com/SimpleMachines/SMF2.1/pull/3907/files [nonactive]

[d3vcho]

This was fixed on the 2.0 branch and will be effective in the next patch