[glibc] elf: Fix tst-relro-symbols.py argument passing

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=71e408e45dcacf429a94b2807f75aaadd8d37cb9

commit 71e408e45dcacf429a94b2807f75aaadd8d37cb9
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Wed Dec 14 18:18:34 2022 -0300

    elf: Fix tst-relro-symbols.py argument passing
    
    Current scheme only consideres the first argument for both --required
    and --optional, where the idea is to append a new item.
    
    Checked on x86_64-linux-gnu.
    
    Reviewed-by: Florian Weimer <fweimer@redhat.com>

Diff:
---
 elf/tst-relro-symbols.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/elf/tst-relro-symbols.py b/elf/tst-relro-symbols.py
index 368ea3349f..ea61024b5e 100644
--- a/elf/tst-relro-symbols.py
+++ b/elf/tst-relro-symbols.py
@@ -56,10 +56,10 @@ def get_parser():
     """Return an argument parser for this script."""
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument('object', help='path to object file to check')
-    parser.add_argument('--required', metavar='NAME', default=(),
-                        help='required symbol names', nargs='*')
-    parser.add_argument('--optional', metavar='NAME', default=(),
-                        help='required symbol names', nargs='*')
+    parser.add_argument('--required', metavar='NAME', action='append',
+                        default=[], help='required symbol names')
+    parser.add_argument('--optional', metavar='NAME', action='append',
+                        default=[], help='required symbol names')
     return parser
 
 def main(argv):