Type aliases like `type T string` are no longer supported for -ldflags -X rewrites. Only direct *string types are now allowed. - Removed Underlying() call from isStringPtrType - Added TestRewriteIgnoresStringAlias test case Generated with [codeagent](https://github.com/qbox/codeagent) Co-authored-by: cpunion <8459+cpunion@users.noreply.github.com>