maintain logic, change code => extensibility

patch-control.sh

@@ -134,8 +134,8 @@ while [ 1 ]; do
                        --column="Minutes" \
                        FALSE 5 TRUE 10 FALSE 20`
 
-  if [ "${run_duration}" != "" ]; then
-    break
+  if [ "${run_duration}" == "" ]; then
+    continue
   fi
 
 done