WT-2522: Incorrect format code in message

Use "%lu" to print the DWORD, it's a 32-bit "unsigned long".

src/os_win/os_fs.c

@@ -361,8 +361,8 @@ __win_handle_read(
 		if (!ReadFile(fh->filehandle, addr, chunk, &nr, &overlapped))
 			WT_RET_MSG(session,
 			    nr == 0 ? WT_ERROR : __wt_getlasterror(),
-			    "%s: handle-read: ReadFile: failed to read %"
-			    WT_SIZET_FMT " bytes at offset %" PRIuMAX,
+			    "%s: handle-read: ReadFile: failed to read %lu "
+			    "bytes at offset %" PRIuMAX,
 			    fh->name, chunk, (uintmax_t)offset);
 	}
 	return (0);
@@ -485,8 +485,8 @@ __win_handle_write(WT_SESSION_IMPL *session,
 
 		if (!WriteFile(fh->filehandle, addr, chunk, &nw, &overlapped))
 			WT_RET_MSG(session, __wt_getlasterror(),
-			    "%s: handle-write: WriteFile: failed to write %"
-			    WT_SIZET_FMT " bytes at offset %" PRIuMAX,
+			    "%s: handle-write: WriteFile: failed to write %lu "
+			    "bytes at offset %" PRIuMAX,
 			    fh->name, chunk, (uintmax_t)offset);
 	}
 	return (0);