Fixed an endless loop if printing web pages.

Entering a page range which is valid, but outside of the printable
range would result in an infinite loop.

Task-number: QTBUG-6051
Reviewed-by: Simon Hausmann
(cherry picked from commit 7c2000060bbc152ae32594f3d4dd60bd3351dab0)

1 files changed, 5 insertions, 0 deletions

diff --git a/src/3rdparty/webkit/WebKit/qt/Api/qwebframe.cpp b/src/3rdparty/webkit/WebKit/qt/Api/qwebframe.cpp
index 29bde0d..e4c2afc 100644
--- a/src/3rdparty/webkit/WebKit/qt/Api/qwebframe.cpp
+++ b/src/3rdparty/webkit/WebKit/qt/Api/qwebframe.cpp
@@ -1369,6 +1369,11 @@ void QWebFrame::print(QPrinter *printer) const
     // paranoia check
     fromPage = qMax(1, fromPage);
     toPage = qMin(printContext.pageCount(), toPage);
+    if (toPage < fromPage) {
+        // if the user entered a page range outside the actual number
+        // of printable pages, just return
+        return;
+    }
 
     if (printer->pageOrder() == QPrinter::LastPageFirst) {
         int tmp = fromPage;