fix switch to add extra_data to license, revert change that broke copying o...

Jan Willamowius

2019-04-24 cd279f99fc3249c731ced737ca88fb66f9c3801c

 src/library/os/os.c

@@ -88,6 +88,8 @@
#include <Windows.h>
#pragma comment(lib, "IPHLPAPI.lib")

unsigned char* unbase64(const char* ascii, int len, int *flen);

static void printHash(HCRYPTHASH* hHash) {
   BYTE *pbHash;
   DWORD dwHashLen;