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/compositor/text-backend.c b/compositor/text-backend.c
index 0c000ba..262ba9f 100644
--- a/compositor/text-backend.c
+++ b/compositor/text-backend.c
@@ -28,6 +28,7 @@
 
 #include <stdbool.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <string.h>
 #include <unistd.h>
 #include <time.h>