[PATCH i-g-t] testdisplay: Allow getopt to print error messages

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By not assigning opterr, getopt will print its own error message that
includes information about whether an option is unknown or just requires
an additional argument.

Signed-off-by: Thomas Wood <thomas.wood@xxxxxxxxx>
---
 tests/testdisplay.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tests/testdisplay.c b/tests/testdisplay.c
index 0fcce19..a0f43e9 100644
--- a/tests/testdisplay.c
+++ b/tests/testdisplay.c
@@ -723,7 +723,6 @@ int main(int argc, char **argv)
 
 	enter_exec_path( argv );
 
-	opterr = 0;
 	while ((c = getopt(argc, argv, optstr)) != -1) {
 		switch (c) {
 		case '3':
@@ -771,7 +770,6 @@ int main(int argc, char **argv)
 			sscanf(optarg, "%d,%d", &specified_disp_id, &specified_mode_num);
 			break;
 		default:
-			fprintf(stderr, "unknown option %c\n", c);
 			/* fall through */
 		case 'h':
 			usage(argv[0]);
-- 
1.8.3.1

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