[PATCH] efi_selftests: fix protocol repeated selftesting

[Ilias Apalodimas]

Running the protocols  selftest more than one times fails with

=> setenv efi_selftest 'manage protocols' && bootefi selftest
Testing EFI API implementation
Selected test: 'manage protocols'
Setting up 'manage protocols'
Setting up 'manage protocols' succeeded
Executing 'manage protocols'
Executing 'manage protocols' succeeded
Tearing down 'manage protocols'
Tearing down 'manage protocols' succeeded
Summary: 0 failures

=> bootefi selftest
Testing EFI API implementation
Selected test: 'manage protocols'
Setting up 'manage protocols'
lib/efi_selftest/efi_selftest_manageprotocols.c(88):
ERROR: InstallProtocolInterface failed
lib/efi_selftest/efi_selftest.c(89):
ERROR: Setting up 'manage protocols' failed
Tearing down 'manage protocols'
Tearing down 'manage protocols' succeeded
Summary: 1 failures

The reason is that we don't set the handles to NULL after deleting and
freeing them.  As a result the subsequent protocol installation will try
to use an existing handle which we just removed that from our object list.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
 lib/efi_selftest/efi_selftest_manageprotocols.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/efi_selftest/efi_selftest_manageprotocols.c b/lib/efi_selftest/efi_selftest_manageprotocols.c
index 8edb1e4d4671..097b2ae35456 100644
--- a/lib/efi_selftest/efi_selftest_manageprotocols.c
+++ b/lib/efi_selftest/efi_selftest_manageprotocols.c
@@ -79,6 +79,8 @@ static int setup(const efi_handle_t img_handle,
 	efi_status_t ret;
 	efi_handle_t handle;
 
+	handle1 = NULL;
+	handle2 = NULL;
 	boottime = systable->boottime;
 
 	ret = boottime->install_protocol_interface(&handle1, &guid3,
-- 
2.39.2