NullPointerException in com.codename1.impl.javase.JavaSEPort.editString

[ThomasH99]

With 7.0.251 I got the below stacktrace. Unfortunately, I don't have the context which triggered, but maybe there's a real bug to fix.

[EDT] 0:16:14,413 - Exception: java.lang.NullPointerException - null
java.lang.NullPointerException
	at com.codename1.impl.javase.JavaSEPort.editString(JavaSEPort.java:8703)
	at com.codename1.impl.CodenameOneImplementation.editStringImpl(CodenameOneImplementation.java:556)
	at com.codename1.ui.Display.editString(Display.java:1837)
	at com.codename1.ui.Display.editString(Display.java:1797)
	at com.codename1.ui.TextArea.editString(TextArea.java:859)
	at com.codename1.ui.TextArea.pointerReleased(TextArea.java:893)
	at com.codename1.ui.LeadUtil.pointerReleased(LeadUtil.java:171)
	at com.codename1.ui.Form.pointerReleased(Form.java:3991)
	at com.myapp.myapp.MyForm.pointerReleased(MyForm.java:10700)
	at com.codename1.ui.Component.pointerReleased(Component.java:5819)
	at com.codename1.ui.Display.handleEvent(Display.java:2421)
	at com.codename1.ui.Display.edtLoopImpl(Display.java:1255)
	at com.codename1.ui.Display.mainEDTLoop(Display.java:1145)
	at com.codename1.ui.RunnableWrapper.run(RunnableWrapper.java:139)
	at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:179)