Return "false" instead of "nullptr" in bool DexFile::Open.

Otherwise on 4.10 the following error appears:
"error: converting to 'bool' from 'std::nullptr_t' requires direct-initialization [-fpermissive]"
Here is the detailed description with links:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52174

Change-Id: I77c6571b557dde55f4e19a79db7bf997303ede3b
Signed-off-by: Alexander Ivchenko <alexander.ivchenko@intel.com>
1 file changed