drivers/ide/ide-acpi.c: fix uninitialized var warning

drivers/ide/ide-acpi.c: In function 'ide_acpi_init':
drivers/ide/ide-acpi.c:175: warning: 'dev_handle' may be used uninitialized in this function
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-acpi.c

@@ -171,7 +171,7 @@ err:
 static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif)
 {
 	struct device		*dev = hwif->gendev.parent;
-	acpi_handle		dev_handle;
+	acpi_handle		uninitialized_var(dev_handle);
 	acpi_integer		pcidevfn;
 	acpi_handle		chan_handle;
 	int			err;