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-rw-r--r--lib/cgi/session.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/cgi/session.rb b/lib/cgi/session.rb
index eb8f0cbaf6..cfefa8f0b0 100644
--- a/lib/cgi/session.rb
+++ b/lib/cgi/session.rb
@@ -137,6 +137,7 @@ class CGI
end
def update
+ return unless @hash
@f.rewind
for k,v in @hash
@f.printf "%s=%s\n", CGI::escape(k), CGI::escape(String(v))