spring crashes with segmentation fault iff invoked with optirun

[Karl-Philipp Richter]

invoking `spring` 0.96.0 with `optirun` 3.2.1 (running on Ubuntu 14.10 with Linux 3.19-rc1 and nvidia-340) causes a crash which doesn't occur when `spring` is invoked without `optirun`. The output is

    [ParseCmdLine] command-line args: "spring"
    Using configuration source: "/home/richter/.config/spring/springsettings.cfg"
    Available log sections: KeyBindings, Sound, Font, AutohostInterface, Net, VFS, Texture, Path, CSMFGroundTextures, RoamMeshDrawer, BumpWater, DynWater, SkyBox, DecalsDrawerGL4, FarTextureHandler, Shader, Piece, Model, ModelDrawer, OBJParser, WorldObjectModelRenderer, GroundMoveType, UnitScript, CregSerializer, ArchiveScanner, LuaSocket
    Enabled log sections: Sound(LOG_LEVEL_INFO)
    Enable or disable log sections using the LogSections configuration key
      or the SPRING_LOG_SECTIONS environment variable (both comma separated).
      Use "none" to disable the default log sections.
    LogOutput initialized.
    Spring 96.0
    Build date/time: Jun 2 2014 05:25:24
    Build environment: boost-105500, GNU libstdc++ version 20140527
    Compiler: gcc-4.8.3
    OS: Linux 3.19.0-031900rc1-generic #201412210135 SMP Sun Dec 21 01:36:56 UTC 2014 x86_64
    OS: 64bit native mode
    [CMyMath::Init] CPU SSE mask: 127, flags:
     SSE 1.0: 1, SSE 2.0: 1
     SSE 3.0: 1, SSSE 3.0: 1
     SSE 4.1: 1, SSE 4.2: 1
     SSE 4.0A: 0, SSE 5.0A: 0
     using streflop SSE FP-math mode, CPU supports SSE instructions
    Supported Video modes: 3046x1050, 1366x768, 1360x768, 1024x768, 800x600, 640x480
    [SetSDLVideoMode] video mode set to 3046x1050/32bit
    Error: Segmentation fault (SIGSEGV) in spring 96.0
    Error: Stacktrace for Spring 96.0:
    Error: <0> /lib/x86_64-linux-gnu/libpthread.so.0(+0xfc90) [0x7fca99589c90]
    Error: <1> ??:?
    Error: <2> ??:?
    Error: <3> ??:?
    Error: <4> ??:?
    Error: <5> ??:?
    Error: <6> ??:?
    Error: <7> ??:?
    Error: <8> spring() [0x4836dc]
    Error: <9> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fca96136ec5]
    Error: <10> ??:?
    Error: [ErrorMessageBox][1] msg="Spring has crashed:
    Segmentation fault (SIGSEGV).

    A stacktrace has been written to:
      /home/richter/.config/spring/infolog.txt" IsMainThread()=1 fromMain=0
    Error: [ErrorMessageBox][2]
    [SpringApp::ShutDown][1]
    [ThreadPool::SetThreadCount][1] #wanted=0 #current=1
    [ThreadPool::SetThreadCount][2] #threads=0
    [SpringApp::ShutDown][2]
    [SpringApp::ShutDown][3]
    [SpringApp::ShutDown][4]
    [SpringApp::ShutDown][5]
    [SpringApp::ShutDown][6]
    [SpringApp::ShutDown][7]
    [SpringApp::ShutDown][8]
    [SpringApp::ShutDown][9]
    [SpringApp::ShutDown][10]
    [SpringApp::ShutDown][11]
    [WatchDog::Uninstall][1] hangDetectorThread=(nil)
    [SpringApp::ShutDown][12]
    Error: [ErrorMessageBox][3]
    Error: [ErrorMessageBox][4]
    Fatal: Spring crashed
    Spring has crashed:
    Segmentation fault (SIGSEGV).

    A stacktrace has been written to:
      /home/richter/.config/spring/infolog.txt

The mentioned log file `infolog.txt` contains the exact same.