fix uninitialized

src/particles/ImpactXParticleContainer.cpp

@@ -124,7 +124,7 @@ namespace impactx
         int const np = x.size();
 
         // we add particles to lev 0, tile 0 of the first box assigned to this proc
-        int lid = 0, gid, tid = 0;
+        int lid = 0, gid = 0, tid = 0;
         {
             const auto& pmap = ParticleDistributionMap(lid).ProcessorMap();
             auto it = std::find(pmap.begin(), pmap.end(), amrex::ParallelDescriptor::MyProc());