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-rw-r--r--tool/vcs.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/tool/vcs.rb b/tool/vcs.rb
index ecb313d58d..808b28344e 100644
--- a/tool/vcs.rb
+++ b/tool/vcs.rb
@@ -407,7 +407,7 @@ class VCS
modified = log[/^Date:\s+(.*)/, 1]
branch = cmd_read_at(srcdir, [gitcmd + %W[symbolic-ref --short HEAD]])
if branch.empty?
- branch_list = cmd_read_at(srcdir, [gitcmd + %W[branch --list --contains HEAD]]).lines
+ branch_list = cmd_read_at(srcdir, [gitcmd + %W[branch --list --contains HEAD]]).lines.to_a
branch_list.delete_if {|b| /detached at/ =~ b}
(branch = branch_list[0]).strip! unless branch_list.empty?
end