winapi_check: '-register' is compatible with stdcall. So remove this obsolete warning.

tools/winapi/winapi_local.pm

@@ -123,14 +123,8 @@ sub _check_function($$$$$$) {
 	$declared_calling_convention = $1;
     }
 
-    if ($declared_register)
-    {
-        if ($implemented_calling_convention eq "stdcall")
-        {
-	    $output->write("-register functions should not be implemented as stdcall\n");
-        }
-    }
-    elsif($implemented_calling_convention ne $declared_calling_convention &&
+    if(!$declared_register &&
+       $implemented_calling_convention ne $declared_calling_convention &&
        $implemented_calling_convention ne "asm" &&
        !($declared_calling_convention =~ /^pascal/ && $forbidden_return_type) &&
        !($implemented_calling_convention =~ /^(?:cdecl|varargs)$/ && $declared_calling_convention =~ /^(?:cdecl|varargs)$/))