efi_loader: fix typo in efi_locate_handle() comment

%s/not buffer/no buffer/

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index b97d55c..887baaa 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1439,7 +1439,7 @@
 
 	*buffer_size = size;
 
-	/* The buffer size is sufficient but there is not buffer */
+	/* The buffer size is sufficient but there is no buffer */
 	if (!buffer)
 		return EFI_INVALID_PARAMETER;