ACPICA: Fix for fault if Load() fails

Fixed a problem with the Load operator when loading a table from
a buffer object. The input buffer was prematurely zeroed and/or
deleted.

http://www.acpica.org/bugzilla/show_bug.cgi?id=577

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/utilities/utdebug.c b/drivers/acpi/utilities/utdebug.c
index 7361204..a914867 100644
--- a/drivers/acpi/utilities/utdebug.c
+++ b/drivers/acpi/utilities/utdebug.c
@@ -524,6 +524,11 @@
 	u32 temp32;
 	u8 buf_char;
 
+	if (!buffer) {
+		acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
+		return;
+	}
+
 	if ((count < 4) || (count & 0x01)) {
 		display = DB_BYTE_DISPLAY;
 	}