[gcc r13-1456] gcc-descr: by default show revision for HEAD

[Martin Liska]

https://gcc.gnu.org/g:88b9d090aa1686ba52ce6016aeed66464fb0d4bb

commit r13-1456-g88b9d090aa1686ba52ce6016aeed66464fb0d4bb
Author: Martin Liska <mliska@suse.cz>
Date:   Mon Jul 4 12:13:44 2022 +0200

    gcc-descr: by default show revision for HEAD
    
    I've made the mistake multiple times while doing a bisection.
    One would expect that gcc-descr w/o an argument would print
    revision for the current HEAD and not master.
    Thus change it.
    
    contrib/ChangeLog:
    
            * git-descr.sh: By default print revision for HEAD.

Diff:
---
 contrib/git-descr.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/git-descr.sh b/contrib/git-descr.sh
index 96a993095bd..28db83abc08 100755
--- a/contrib/git-descr.sh
+++ b/contrib/git-descr.sh
@@ -4,7 +4,7 @@
 
 short=no
 long=no
-c=master
+c=HEAD
 
 for arg in "$@"
 do