Update comments for the gdb/24331 fix.

Approved-by: Andrew Burgess <aburgess@redhat.com>

gdb/testsuite/gdb.base/printcmds.exp

diff --git a/gdb/testsuite/gdb.base/printcmds.exp b/gdb/testsuite/gdb.base/printcmds.exp
index f2be549..2506f74 100644
--- a/gdb/testsuite/gdb.base/printcmds.exp
+++ b/gdb/testsuite/gdb.base/printcmds.exp
@@ -1077,7 +1077,10 @@
     }
 }
 
-# Test for BZ#24331
+# Test that 'set elements' correctly limits the number of characters
+# printed from a string when a string ends with repeated characters.
+# This is gdb/24331
+
 proc test_repeat_bytes_limit {} {
    gdb_test "print -elem 3 -- \"AAAAA\"" "= \"AAA\"..."
    gdb_test "print -char 3 -elem 10 -- \"AAAAA\"" "= \"AAA\"..."

gdb/testsuite/gdb.python/py-format-string.exp

diff --git a/gdb/testsuite/gdb.python/py-format-string.exp b/gdb/testsuite/gdb.python/py-format-string.exp
index 2a011eb..55a3776 100644
--- a/gdb/testsuite/gdb.python/py-format-string.exp
+++ b/gdb/testsuite/gdb.python/py-format-string.exp
@@ -745,8 +745,6 @@
       "${default_pointer_regexp} \"hel\"..."
     check_format_string "a_binary_string" $opts \
       "${default_pointer_regexp} \"hel\"..."
-    # This will print four characters instead of three, see
-    # <https://sourceware.org/bugzilla/show_bug.cgi?id=24331>.
     check_format_string "a_binary_string_array" $opts \
       "\"hel\"..."
     check_format_string "a_big_string" $opts \