test: make the interfaces static

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

test/log.c

@@ -45,7 +45,7 @@ static void close_restricted(int fd, void *data)
 	close(fd);
 }
 
-const struct libinput_interface simple_interface = {
+static const struct libinput_interface simple_interface = {
 	.open_restricted = open_restricted,
 	.close_restricted = close_restricted,
 };

test/misc.c

@@ -43,7 +43,7 @@ static void close_restricted(int fd, void *data)
 	close(fd);
 }
 
-const struct libinput_interface simple_interface = {
+static const struct libinput_interface simple_interface = {
 	.open_restricted = open_restricted,
 	.close_restricted = close_restricted,
 };

test/path.c

@@ -49,7 +49,7 @@ static void close_restricted(int fd, void *data)
 	close(fd);
 }
 
-const struct libinput_interface simple_interface = {
+static const struct libinput_interface simple_interface = {
 	.open_restricted = open_restricted,
 	.close_restricted = close_restricted,
 };

test/udev.c

@@ -44,7 +44,7 @@ static void close_restricted(int fd, void *data)
 	close(fd);
 }
 
-const struct libinput_interface simple_interface = {
+static const struct libinput_interface simple_interface = {
 	.open_restricted = open_restricted,
 	.close_restricted = close_restricted,
 };