block/raw-win32: Fix compiler warnings (wrong format specifiers)

Commit fbcad04 added fprintf statements
with wrong format specifiers.

GetLastError() returns a DWORD which is unsigned long, so %lu must be used.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

block/raw-win32.c

@@ -314,11 +314,11 @@ static int raw_truncate(BlockDriverState *bs, int64_t offset)
      */
     dwPtrLow = SetFilePointer(s->hfile, low, &high, FILE_BEGIN);
     if (dwPtrLow == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
-        fprintf(stderr, "SetFilePointer error: %d\n", GetLastError());
+        fprintf(stderr, "SetFilePointer error: %lu\n", GetLastError());
         return -EIO;
     }
     if (SetEndOfFile(s->hfile) == 0) {
-        fprintf(stderr, "SetEndOfFile error: %d\n", GetLastError());
+        fprintf(stderr, "SetEndOfFile error: %lu\n", GetLastError());
         return -EIO;
     }
     return 0;