[PATCH] direct-io typo fix

From: Klaas de Waal <klaas.de.waal@hccnet.nl>

Bug in parameter of ZERO_PAGE macro in line 679 of fb/direct-io.c Parameter
dio->cur_user_address has to be dio->curr_user_address.  This bug shows
when compling for MIPS little endian as target, not when compiling for X86.

fs/direct-io.c

@@ -677,7 +677,7 @@ static void dio_zero_block(struct dio *dio, int end)
 
 	this_chunk_bytes = this_chunk_blocks << dio->blkbits;
 
-	page = ZERO_PAGE(dio->cur_user_address);
+	page = ZERO_PAGE(dio->curr_user_address);
 	if (submit_page_section(dio, page, 0, this_chunk_bytes, 
 				dio->next_block_for_io))
 		return;