syntaxError for mutable lambda without arguments

[zzattack]

This gives a syntax error in cppcheck 2.18:

 getMainQueue().queueAction([self=shared_from_this(), x, y] mutable
  {
    handle(x, y);
  });

I believe it even leads to failure to parse any lines that come after, and breaks analysis of anything including a file with this construct.

Adding parentheses between the captures list and mutable keyword solves it:

 getMainQueue().queueAction([self=shared_from_this(), x, y] () mutable
  {
    handle(x, y);
  });

[CHR]

Thanks for reporting, ticket is here: https://trac.cppcheck.net/ticket/14256