I am getting lots of SEVERE warnings in logs, about NumberFormatException each time when regenerating plots.

Stacktrace:
java.lang.NumberFormatException: empty String
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:994)
at java.lang.Double.valueOf(Double.java:475)
at hudson.plugins.plot.Plot.generatePlot(Plot.java:620)
at hudson.plugins.plot.Plot.plotGraph(Plot.java:462)
at hudson.plugins.plot.PlotReport.doGetPlot(PlotReport.java:74)
at sun.reflect.GeneratedMethodAccessor1211.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:121)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)

Looking at the CSV data files generated by the plugin in
/var/lib/jenkins/jobs/my_job, I can see that for each build of the project, I have N lines for the values of my N curves of a plot, then one line "", "N", "buildnum", "timestamp", "" :

Exemple:
"846631","1","271","1439971819188",""
" 240361"," 2","271","1439971819188",""
" 143274"," 4","271","1439971819188",""
"","3","271","1439971819188",""
"1.0564e+06","1","272","1440001800673",""
" 354972"," 2","272","1440001800673",""
" 180714"," 4","272","1440001800673",""
"","3","272","1440001800673",""
"846899","1","272","1440001800673",""
" 288147"," 2","272","1440001800673",""
" 145421"," 4","272","1440001800673",""
"","3","272","1440001800673",""

generatePlot doesn't seem to do any detection of that type of lines, and i strongly think those lines are the ones generating my errors about the value field being empty.
My plot data starting to become big, this filled my logs (and my server's partition..) in just an afternoon of minimal useage of the plot plugin.

If the line has a use and can't be removed. Could it at least be detected properly to avoid the exceptions in the logs, in the same spirit as JENKINS-25849?