[lld] [LLD] Use uint64_t timestamp to overcome potential overflow (PR #81665)

[Jinsong Ji via llvm-commits]

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@@ -167,7 +167,7 @@ uint64_t Symbol::getGotVA() const {
 }
 
 uint64_t Symbol::getGotOffset() const {
-  return getGotIdx() * target->gotEntrySize;
+  return getGotIdx() * (uint64_t)target->gotEntrySize;
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jsji wrote:

1468965 [Unintentional integer overflow](https://scan6.scan.coverity.com/doc/en/cov_checker_ref.html#static_checker_OVERFLOW_BEFORE_WIDEN)
The expression's value may not be what the programmer intended, because the expression is evaluated using a narrow (i.e. few bits) integer type.

In lld::​elf::​Symbol::​getGotOffset(): An integer overflow occurs, with the result converted to a wider integer type ([CWE-190](http://cwe.mitre.org/data/definitions/190.html))

https://github.com/llvm/llvm-project/pull/81665