removed malloc from world_polling_process
fixed segfault (host first moved (and possibly deleted!) and then next list element)
Merge branch 'master' of github.com:0ax1/Infektsimulation_Parallel
...
minor
Merge branch 'master' of github.com:0ax1/Infektsimulation_Parallel
minor
removed mpi wait from world_polling_process, (host is kept in static non pointer array)
minor: received_host_for_infection made static in world_polling_process
Merge branch 'master' of github.com:0ax1/Infektsimulation_Parallel
some minor changes to datatypes (non-fixing deadlock)
re-added MPI_Wait