[PATCH] Readline-8.3: fix handling of const type qualifier

[Rudi Heitbaum via Bug reports for GNU readline library]

result is only used as a comparison. For ISO C23, the function strchr
that return pointers into their input arrays now have definitions as
macros that return a pointer to a const-qualified type when the input
argument is a pointer to a const-qualified type.

fixes:
../../tilde.c: In function 'tilde_expand':
../../tilde.c:188:14: warning: assignment discards 'const' qualifier from 
pointer target type [-Wdiscarded-qualifiers]
  188 |   if (result = strchr (string, '~'))                                    
                                                         |              ^

Signed-off-by: Rudi Heitbaum <r...@heitbaum.com>
---
 tilde.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tilde.c b/tilde.c
index 0e82acfc59..8198b39d91 100644
--- a/tilde.c
+++ b/tilde.c
@@ -185,7 +185,7 @@ tilde_expand (const char *string)
   size_t result_size, result_index;
 
   result_index = result_size = 0;
-  if (result = strchr (string, '~'))
+  if (strchr (string, '~'))
     result = (char *)xmalloc (result_size = (strlen (string) + 16));
   else
     result = (char *)xmalloc (result_size = (strlen (string) + 1));
-- 
2.51.0