Add the "ABI_ATTR" attribute to called functions (#891) (#892) I accidentally omitted the "ABI_ATTR" attribute, so that the testsuite fails when testing the Microsoft ABI. Fixes: fe203ffbb2bd ("Fix bugs in the x86-64 and x32 target (#887) (#889)") Signed-off-by: Mikulas Patocka <mikulas@twibright.com>