include stdint.h for int32_t/uint32_t

Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
diff --git a/libweston/launcher-weston-launch.c b/libweston/launcher-weston-launch.c
index ad919f1..96ac25a 100644
--- a/libweston/launcher-weston-launch.c
+++ b/libweston/launcher-weston-launch.c
@@ -23,6 +23,7 @@
 
 #include "config.h"
 
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>