Add space after string literal to fix compiler errors.

Change-Id: If1e97340a01bdb84a0d85d7348d3e18abdd37483
diff --git a/liblight/lights.c b/liblight/lights.c
index 12af384..7a3775e 100644
--- a/liblight/lights.c
+++ b/liblight/lights.c
@@ -21,6 +21,7 @@
 #include <cutils/log.h>
 
 #include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <errno.h>