add missing dollar sign

setup/so-functions

@@ -1946,10 +1946,10 @@ securityonion_repo() {
 			logCmd "dnf repolist all"
 		fi
 		if [[ $waitforstate ]]; then
-			if [[ ! is_airgap ]]; then
-			# Build the repo locally so we can use it
-			echo "Syncing Repo"
-			repo_sync_local
+			if [[ ! $is_airgap ]]; then
+				# Build the repo locally so we can use it
+				echo "Syncing Repo"
+				repo_sync_local
 			fi
 		fi
 	fi