Fix segfault in SDL client help for improvements with non-tech prereqs.
commit03affdf4dd08a9e7441c9c0fc0c5db75d7c4a5c1
authorjtn <jtn@a0f10bec-cc02-0410-94fc-a9cfff90b4cd>
Sun, 5 Jan 2014 10:55:05 +0000 (5 10:55 +0000)
committerjtn <jtn@a0f10bec-cc02-0410-94fc-a9cfff90b4cd>
Sun, 5 Jan 2014 10:55:05 +0000 (5 10:55 +0000)
treea48c2824e3504e54339ea99a86792642c8893f9a
parente6b46c9aff101528db0c6e66c02515497a11016f
Fix segfault in SDL client help for improvements with non-tech prereqs.

See gna bug #21433.

git-svn-id: svn://svn.gna.org/svn/freeciv/branches/S2_5@24040 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
client/gui-sdl/helpdlg.c