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Fix an overflow when the amount of requested cache memory
is greater than the *lowest value
Manuel Teira <manuel.teira@telefonica.net>

#
# Patch managed by http://www.holgerschurig.de/patcher.html
#

Index: qt-2.3.10-snapshot-20060120/src/kernel/qgfxlinuxfb_qws.cpp
===================================================================
--- qt-2.3.10-snapshot-20060120.orig/src/kernel/qgfxlinuxfb_qws.cpp	2006-01-20 21:07:51.803841520 +0100
+++ qt-2.3.10-snapshot-20060120/src/kernel/qgfxlinuxfb_qws.cpp	2006-01-20 21:08:13.655519560 +0100
@@ -616,6 +616,11 @@
 
     // No free blocks in already-taken memory; get some more
     // if we can
+    if ( amount >= (*lowest ) ) {
+	//Avoid this overflow
+	qt_fbdpy->ungrab();
+	return 0;
+    }
     unsigned int newlowest = (*lowest)-amount;
     if (newlowest % align) {
        	newlowest -= align;