[VecOps] Fix reallocation with memory adoption and POD types
[VecOps] Fix reallocation with memory adoption and POD types

Before this patch, `grow_pod` called `realloc` to expand the memory
buffer in case the RVec was in "memory view" mode. Instead we want
a full malloc in case we are adopting memory.

olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root