Family Lines Report generates empty PDFs when name [has double-quotes]

Fixes #10096

gramps/plugins/graph/gvfamilylines.py

@@ -844,6 +844,9 @@ class FamilyLinesReport(Report):
             # see if we have a table that needs to be terminated
             if imagePath:
                 label += '</TD></TR></TABLE>'
+            else:
+                # non html label is enclosed by "" so escape other "
+                label = label.replace('"', '\\\"')
 
             shape   = "box"
             style   = "solid"