message: file-backed-mmap: fix reexec bug
diff: @@ -253,7 +253,8 @@ protected:
  snprintf(buf, buf_len - 1, "%s/alloc-mesh-%d", tmpDir, pid);
  int result = mkdir(buf, 0755);
  - if (result != 0)
  + // we will get EEXIST if we have re-execed
  + if (result != 0 && errno != EEXIST)
  continue;
  char *spanDir = reinterpret_cast<char *>(internal::Heap().malloc(strlen(buf)+1));
  