Ignore all syscall errors

At least, Error::ENOTSUP may be raised on some extreme environments

Author: mame

lib/error_highlight/core_ext.rb

@@ -29,7 +29,7 @@ def to_s
 
         spot = ErrorHighlight.spot(node, **opts)
 
-      rescue Errno::ENOENT, SyntaxError
+      rescue SystemCallError, SyntaxError
       end
 
       if spot