FakeVim: Fix invalid cursor position warnings

Change-Id: If09f2cfeb58e9810ec3858c0a20d2f5e0a7fac14
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/fakevim/fakevimhandler.cpp

@@ -3284,7 +3284,7 @@ void FakeVimHandler::Private::fixSelection()
     if (g.movetype == MoveInclusive) {
         // If position or anchor is after end of non-empty line, include line break in selection.
         if (characterAtCursor() == ParagraphSeparator) {
-            if (!atEmptyLine()) {
+            if (!atEmptyLine() && !atDocumentEnd()) {
                 setPosition(position() + 1);
                 return;
             }