#2297 an24b revision 4996 crashes fgfs on startup

[Ludovic Brenta]

The latest change in the an24b in fgaddon (r4996) introduced a regression that crashes fgfs 2019.1.1 with the error:

FGPropertyManager::GetNode() No node found for fcs/throttle-pos-norm

In file /home/lbrenta/.fgfs/Aircraft/an24b/Engines/ai24.xml: line 51
Segmentation fault

Thread 1 (Thread 0x7ffff013da80 (LWP 31566)):
#0  0x000055555631fd4a in JSBSim::FGEngine::~FGEngine() ()
#1  0x0000555555ab4320 in ?? ()
#2  0x0000555556304427 in JSBSim::FGPropulsion::Load(JSBSim::Element*) ()
#3  0x0000555556360693 in JSBSim::FGFDMExec::LoadModel(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) ()
#4  0x0000555556362316 in JSBSim::FGFDMExec::LoadModel(SGPath const&, SGPath const&, SGPath const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) ()
#5  0x0000555556292c09 in FGJSBsim::FGJSBsim(double) ()
#6  0x00005555560cb1a2 in FDMShell::createImplementation() ()
#7  0x000055555647ec0a in SGSubsystem::incrementalInit() ()
#8  0x0000555556480707 in SGSubsystemGroup::incrementalInit() ()
#9  0x000055555647ecc3 in SGSubsystemMgr::incrementalInit() ()
#10 0x00005555562625d0 in ?? ()
#11 0x00005555561dc509 in fgOSMainLoop() ()
#12 0x00005555562606df in fgMainInit(int, char**) ()
#13 0x0000555555af5c55 in main ()

[Ludovic Brenta]

Minimal fix in r5005.

[Adrian Sprick]

Ah, thanks for fixing! I haven't checked against 2019.1.1, so that one slipped through...