readline: add patch 001 for version 8.0

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

src/patches/readline/readline80-001

@@ -0,0 +1,38 @@
+			   READLINE PATCH REPORT
+			   =====================
+
+Readline-Release: 8.0
+Patch-ID: readline80-001
+
+Bug-Reported-by:	chet.ramey@case.edu
+Bug-Reference-ID:
+Bug-Reference-URL:
+
+Bug-Description:
+
+The history file reading code doesn't close the file descriptor open to
+the history file when it encounters a zero-length file.
+
+Patch (apply with `patch -p0'):
+
+*** ../readline-8.0-patched/histfile.c	2018-06-11 09:14:52.000000000 -0400
+--- histfile.c	2019-05-16 15:55:57.000000000 -0400
+***************
+*** 306,309 ****
+--- 312,316 ----
+      {
+        free (input);
++       close (file);
+        return 0;	/* don't waste time if we don't have to */
+      }
+*** ../readline-8.0/patchlevel	2013-11-15 08:11:11.000000000 -0500
+--- patchlevel	2014-03-21 08:28:40.000000000 -0400
+***************
+*** 1,3 ****
+  # Do not edit -- exists only for use by patch
+  
+! 0
+--- 1,3 ----
+  # Do not edit -- exists only for use by patch
+  
+! 1