[fuzzer] Fix nested mallocs

Summary: Nested mallocs are possible with internal symbolizer.

Reviewers: kcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D39397

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@317186 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed