[gcc r13-2731] contrib: skip new egrep warning

[Martin Liska <marxin@gcc.gnu.org>]

https://gcc.gnu.org/g:63e3cc294d835b43701eeef9410d1b8fc8922869

commit r13-2731-g63e3cc294d835b43701eeef9410d1b8fc8922869
Author: Martin Liska <mliska@suse.cz>
Date:   Tue Sep 20 10:16:47 2022 +0200

    contrib: skip new egrep warning
    
    contrib/ChangeLog:
    
            * filter-clang-warnings.py: Skip egrep: warning: egrep is
              obsolescent; using grep -E.

Diff:
---
 contrib/filter-clang-warnings.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/contrib/filter-clang-warnings.py b/contrib/filter-clang-warnings.py
index 942cd30b659..3c68be028a8 100755
--- a/contrib/filter-clang-warnings.py
+++ b/contrib/filter-clang-warnings.py
@@ -39,7 +39,7 @@ def skip_warning(filename, message):
                  '-Wignored-attributes', '-Wgnu-zero-variadic-macro-arguments',
                  '-Wformat-security', '-Wundefined-internal',
                  '-Wunknown-warning-option', '-Wc++20-extensions',
-                 '-Wbitwise-instead-of-logical'],
+                 '-Wbitwise-instead-of-logical', 'egrep is obsolescent'],
             'insn-modes.cc': ['-Wshift-count-overflow'],
             'insn-emit.cc': ['-Wtautological-compare'],
             'insn-attrtab.cc': ['-Wparentheses-equality'],
@@ -57,8 +57,8 @@ def skip_warning(filename, message):
             'lex.cc': ['-Wc++20-attribute-extensions'],
     }
 
-    for name, ignores in ignores.items():
-        for i in ignores:
+    for name, ignore in ignores.items():
+        for i in ignore:
             if name in filename and i in message:
                 return True
     return False