[Bug go/68255] cgo-generated constructor not being called

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68255

--- Comment #5 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Great, thanks!  My internal customer has confirmed that this patch fixes his
problem with Ethereum.