[chronojump] Fixed bug on triggers on analyze graphs when there are ON and not OFF or viceversa

[Xavier de Blas <xaviblas src gnome org>]

commit 177ae12a4070fb104949db8f3aeafcec5146a3c1
Author: Xavier de Blas <xaviblas gmail com>
Date:   Fri Mar 26 16:26:27 2021 +0100

    Fixed bug on triggers on analyze graphs when there are ON and not OFF or viceversa

 src/trigger.cs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
---
diff --git a/src/trigger.cs b/src/trigger.cs
index a1276faf..1fa6506d 100644
--- a/src/trigger.cs
+++ b/src/trigger.cs
@@ -183,8 +183,13 @@ public class TriggerList
        //but can be ',' if we pass some ints to a csv
        public string ToRCurvesString(Type3 type3, char sepChar)
        {
+               /*
+                  cannot do it here because maybe we have triggers on but not off,
+                  so if we come by off, l.Count is not a good indicator to pass a -1,
+                  so do it at end of this method with if(s == "")
                if(l.Count == 0)
                        return TriggersNotFoundString;
+               */
 
                string s = "";
                string sep = "";
@@ -201,7 +206,11 @@ public class TriggerList
                                sep = sepChar.ToString();
                        }
                }
-               return s;
+
+               if(s == "")
+                       return TriggersNotFoundString;
+               else
+                       return s;
        }
 
        public int Count()