Bash-5.0 patch 9: fix file descriptor leak with zero-length history file

lib/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 */
     }
 

patchlevel.h

@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 8
+#define PATCHLEVEL 9
 
 #endif /* _PATCHLEVEL_H_ */