sudoers error recovery can be configured via an "error_recovery" setting.

This setting is an argument to the sudoers plugin, similar to how
sudoers_file, sudoers_mode, sudoers_uid, etc. are implemented.
The default value is true.

plugins/sudoers/sudoers.h

@@ -298,6 +298,7 @@ extern char *errorfile;
 extern int errorlineno;
 extern bool parse_error;
 extern bool sudoers_warnings;
+extern bool sudoers_recovery;
 extern bool sudoers_strict;
 
 /* toke.l */