"misaligned address" error when using cfg.invcdf and cfg.angleinvcdf

[fangq]

Xavier Attendu reported the following error

MCXLAB ERROR -74 in unit mcx_core.cu:3332: misaligned address
Error from thread (0): misaligned address
C++ Error: MCXLAB Terminated due to an exception!

when running the demo_mcxlab_launchangle.m with increasing number of outputs

[flux] = mcxlab(cfg); PASS
[flux,det] = mcxlab(cfg); PASS
[flux,det,vol] = mcxlab(cfg); PASS
[flux,det,vol,seed] = mcxlab(cfg); FAIL 
[flux,det,vol,seed,traj] = mcxlab(cfg); FAIL

this is a regression that was previously fixed by 53d7ac0, but was not implemented by the latest update. This can be fixed by forcing the buffer length to even number