corrected undefined behaviour when ptr is NULL in HeapFree.
caught one place where free(NULL) happens:
icu_56::Locale::init(const char * localeID, char canonicalize)

BUG=

Review-Url: https://codereview.chromium.org/2377633002
Cr-Commit-Position: refs/heads/master@{#421494}
2 files changed