Readline-8.0 patch 1: fix file descriptor leak with zero-length history file

readline/readline/histfile.c

@@ -305,6 +305,7 @@ read_history_range (const char *filename, int from, int to)
   if (file_size == 0)
     {
       free (input);
+      close (file);
       return 0;	/* don't waste time if we don't have to */
     }
 

readline/readline/patchlevel

@@ -1,3 +1,3 @@
 # Do not edit -- exists only for use by patch
 
-0
+1