Avoid complaining from strlen

`

include/YapError.h

@@ -30,6 +30,8 @@ typedef enum
   CONSISTENCY_ERROR,
   DOMAIN_ERROR_ARRAY_OVERFLOW,
   DOMAIN_ERROR_ARRAY_TYPE,
+  DOMAIN_ERROR_FILE_ERRORS,	
+  DOMAIN_ERROR_FILE_TYPE,	
   DOMAIN_ERROR_IO_MODE,
   DOMAIN_ERROR_MUTABLE,
   DOMAIN_ERROR_NON_EMPTY_LIST,
@@ -42,6 +44,7 @@ typedef enum
   DOMAIN_ERROR_PROLOG_FLAG,
   DOMAIN_ERROR_RADIX,
   DOMAIN_ERROR_SHIFT_COUNT_OVERFLOW,
+  DOMAIN_ERROR_SOLUTIONS,
   DOMAIN_ERROR_SOURCE_SINK,
   DOMAIN_ERROR_STREAM,
   DOMAIN_ERROR_STREAM_ENCODING,