Use custom mkstemp() to fix Win issue in y4m_test

Uses mkstmp() with directory being the same as the test data
directory to create temporary output file. For Windows
GetTempFileNameA() function is used.

Change-Id: Ie4681b2b4f44f8c22d3b3faf134c44087b484f94

1 files changed, 1 insertions, 0 deletions

diff --git a/y4menc.c b/y4menc.c
index 9211452a4..b647e8dcc 100644
--- a/y4menc.c
+++ b/y4menc.c
@@ -48,6 +48,7 @@ int y4m_write_file_header(char *buf, size_t len, int width, int height,
               "C420p16 XYSCSS=420P16\n";
       break;
     default:
+      color = NULL;
       assert(0);
   }
   return snprintf(buf, len, "YUV4MPEG2 W%u H%u F%u:%u I%c %s", width, height,