Fixed a segfault introduced by memory-leak fix

src/SNAP/compute_snad_atom.cpp

@@ -113,7 +113,8 @@ ComputeSNADAtom::ComputeSNADAtom(LAMMPS *lmp, int narg, char **arg) :
     } else error->all(FLERR,"Illegal compute snad/atom command");
   }
 
-  snaptr = new SNA*[comm->nthreads];
+  nthreads = comm->nthreads;
+  snaptr = new SNA*[nthreads];
 #if defined(_OPENMP)
 #pragma omp parallel default(none) shared(lmp,rfac0,twojmax,rmin0,switchflag,bzeroflag)
 #endif

src/SNAP/compute_snav_atom.cpp

@@ -109,7 +109,8 @@ ComputeSNAVAtom::ComputeSNAVAtom(LAMMPS *lmp, int narg, char **arg) :
     } else error->all(FLERR,"Illegal compute snav/atom command");
   }
 
-  snaptr = new SNA*[comm->nthreads];
+  nthreads = comm->nthreads;
+  snaptr = new SNA*[nthreads];
 #if defined(_OPENMP)
 #pragma omp parallel default(none) shared(lmp,rfac0,twojmax,rmin0,switchflag,bzeroflag)
 #endif