Add slot number to forEach hal.

Change-Id: I0f2992d5f4128422d07f897b335c219cc7f1d02c
diff --git a/libs/rs/rsScriptC.cpp b/libs/rs/rsScriptC.cpp
index b230bb5..e8b1014 100644
--- a/libs/rs/rsScriptC.cpp
+++ b/libs/rs/rsScriptC.cpp
@@ -121,7 +121,7 @@
 
     setupGLState(rsc);
     setupScript(rsc);
-    rsc->mHal.funcs.script.invokeForEach(rsc, this, ain, aout, usr, usrBytes, sc);
+    rsc->mHal.funcs.script.invokeForEach(rsc, this, 0, ain, aout, usr, usrBytes, sc);
 }
 
 void ScriptC::Invoke(Context *rsc, uint32_t slot, const void *data, size_t len) {