make no output when -u is only arg and no upgrade available (2017-02-22)

checkssl

@@ -45,10 +45,11 @@
 # 2017-01-12 updated to ignore -r flag if -c is used. (1.15)
 # 2017-01-31 updated variable for auto upgrade location (1.16)
 # 2017-02-06 merge branches parsing CN and wildcard certs (1.17)
+# 2017-02-22 make no output when -u is only arg and no upgrade available (1.18)
 # ---------------------------------------------------------------------------
 
 PROGNAME=${0##*/}
-VERSION="1.17"
+VERSION="1.18"
 
 ORIGCMD="$0 $*"
 CODE_LOCATION="https://raw.githubusercontent.com/srvrco/checkssl/master/checkssl"
@@ -263,6 +264,9 @@ _requires column
 # Check if upgrades are available (unless they have specified -U to ignore Upgrade checks)
 if [[ $_UPGRADE_CHECK -eq 1 ]]; then
   check_upgrade
+  if [[ ! $FILEARG && ! $SERVERARG && ! $LOCATIONARG && ! $DOMAINARG ]]; then
+    graceful_exit
+  fi
 fi
 
 if [[ ! $FILEARG && ! $SERVERARG && ! $LOCATIONARG && ! $DOMAINARG ]]; then