More header untangling.

Change-Id: I090943775cbda8d9515cdb484957f6b05d5b1799
diff --git a/rsScriptC_Lib.cpp b/rsScriptC_Lib.cpp
index a5a0fae..749495d 100644
--- a/rsScriptC_Lib.cpp
+++ b/rsScriptC_Lib.cpp
@@ -19,6 +19,7 @@
 #include "rsMatrix4x4.h"
 #include "rsMatrix3x3.h"
 #include "rsMatrix2x2.h"
+#include "rsgApiStructs.h"
 
 #include "utils/Timers.h"