RFR 8207060 : Memory leak when malloc fails within WITH_UNICODE_STRING block

[Ivan Gerasimov]

Hello!

File src/java.base/windows/native/libjava/io_util_md.c

In the function pathToNTPath(), memory is allocated with malloc() within 
a block of macros WITH_UNICODE_STRING / END_UNICODE_STRING.

In an unlikely event of malloc() failure, the function returns, failing 
to release the string array acquired with WITH_UNICODE_STRING.

Would you please help review the fix?

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8207060
WEBREV: http://cr.openjdk.java.net/~igerasim/8207060/00/webrev/

Thanks in advance!

-- 
With kind regards,
Ivan Gerasimov