Fixed --gen-version logic when defined by declarations in the script

Change-Id: I9a52698915365a4b9ef724da84953875030005fe
diff --git a/jjb/shell/github-release.sh b/jjb/shell/github-release.sh
index daf7ac8..7458bfb 100755
--- a/jjb/shell/github-release.sh
+++ b/jjb/shell/github-release.sh
@@ -33,7 +33,7 @@
 ## -----------------------------------------------------------------------
 ## Uncomment to activate
 ## -----------------------------------------------------------------------
-declare -i -g gen_version=1
+declare -i -g argv_gen_version=1
 declare -i -g draft_release=1
 
 # declare -g TRACE=0  # uncomment to set -x