fakevim: don't let 'F'/'T' at the start of a document go into an endless loop

Merge-request: 99
Reviewed-by: hjk <qtc-committer@nokia.com>

src/plugins/fakevim/fakevimhandler.cpp

@@ -2751,7 +2751,7 @@ void FakeVimHandler::Private::handleFfTt(int key)
     if (forward)
         n += block.length();
     int pos = m_tc.position();
-    while (true) {
+    while (pos != n) {
         pos += forward ? 1 : -1;
         if (pos == n)
             break;