Fix a Valgrind regression in calloc().
Fix a Valgrind regression in calloc().

This regression was caused by 3ef51d7f733ac6432e80fa902a779ab5b98d74f6
(Optimize the fast paths of calloc() and [m,d,sd]allocx().).

jemalloc/jemalloc-cmake,jemalloc/jemalloc-cmake,jemalloc/jemalloc-cmake,jemalloc/jemalloc-cmake