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-rw-r--r--make_patchnum.pl3
1 files changed, 2 insertions, 1 deletions
diff --git a/make_patchnum.pl b/make_patchnum.pl
index fcbfc6c789..9d83dd59f8 100644
--- a/make_patchnum.pl
+++ b/make_patchnum.pl
@@ -133,7 +133,8 @@ if (my $patch_file= read_file(".patch")) {
}
elsif (-d "$srcdir/.git") {
# git branch | awk 'BEGIN{ORS=""} /\*/ { print $2 }'
- ($branch) = map { /\* ([^(]\S*)/ ? $1 : "" } backtick("git branch");
+ ($branch) = map { /\* ([^(]\S*)/ ? $1 : () } backtick("git branch");
+ $branch //= "";
my ($remote,$merge);
if (length $branch) {
$merge= backtick("git config branch.$branch.merge");