efi: Fix several memory leaks of UEFI handles

Fix possible and absolute memory leaks of "handles"
returned by grub_efi_locate_handle() using grub_malloc().

Signed-off-by: Khalid Ali <khaliidcaliy@gmail.com>
Reviewed-by: Sudhakar Kuppusamy <sudhakar@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/commands/efi/lsefi.c

@@ -129,6 +129,7 @@ grub_cmd_lsefi (grub_command_t cmd __attribute__ ((unused)),
 
     }
 
+  grub_free (handles);
   return 0;
 }
 

grub-core/commands/efi/tpm.c

@@ -113,6 +113,7 @@ grub_tpm_handle_find (grub_efi_handle_t *tpm_handle,
       grub_tpm_version = 1;
       *protocol_version = 1;
       grub_dprintf ("tpm", "TPM handle Found, version: 1\n");
+      grub_free (handles);
       return 1;
     }
 
@@ -125,6 +126,7 @@ grub_tpm_handle_find (grub_efi_handle_t *tpm_handle,
       grub_tpm_version = 2;
       *protocol_version = 2;
       grub_dprintf ("tpm", "TPM handle Found, version: 2\n");
+      grub_free (handles);
       return 1;
     }