Replaced 'tok->next()->link()' by 'tok->linkAt(1)'

[orbitcowboy]

Fixes from #6472

[chrchr-github]

cppcheck/lib/checkinternal.cpp

Line 299 in eeef6b8

if (Token::Match(tok, "previous ( ) . next|tokAt|strAt|linkAt (") || Token::Match(tok, "next ( ) . previous|tokAt|strAt|linkAt (") ||

should be changed to

if (Token::Match(tok, "previous ( ) . next|tokAt|strAt|link|linkAt (") || Token::Match(tok, "next ( ) . previous|tokAt|strAt|link|linkAt (") ||

[chrchr-github]

[...]
should be changed to
[...]

Done with other stuff in #6478

[firewave]

I gave it a small spin.

Clang 17 1,230,369,784 -> 1,231,921,651
Clang 17 (with #6479) 1,231,921,669 -> 1,196,502,795

So when the compiler can inline it, these changes actually make the code faster. 👍

[firewave]

callgrind in CI 64,212,820,811 -> 64,288,204,094