[Long] Segfault on applications using qt5

[BERTRAND Joël]

	Hello,

	Solution found.

	This workstation is only used for text edition and its graphic adapter
was configured with 64 MB of RAM. With 256 MB segfault, segfault
disappears (qt5 randomly segfaults with 128 MB).

	But I consider this issue as a major bug, qt5 should runs with an
adapter that has 128 MB of video RAM. I have tested on two another
workstations (Linux and NetBSD) and I cannot reproduced this bug that
seems to be FreeBSD specific.

	Best regards,

	JB