avoid free on deallocated pointer

Maximilien Siavelis

2018-01-09 4ca9b1793db8a736a039fc097fc97f4cc3c92e48

 src/library/os/os-win.c

@@ -140,6 +140,7 @@
            );

      if (dwStatus != NO_ERROR) {

         free(pAdapterInfo);

            pAdapterInfo = NULL;

      }

   } while (dwStatus == ERROR_BUFFER_OVERFLOW && i-- > 0);