Cleanup based on comments.

Change-Id: I2d261b3cd240b890001dcc7d2a849cfdc34328bf
diff --git a/libs/rs/driver/rsdProgramRaster.cpp b/libs/rs/driver/rsdProgramRaster.cpp
index 9b64fa9..e5a0291 100644
--- a/libs/rs/driver/rsdProgramRaster.cpp
+++ b/libs/rs/driver/rsdProgramRaster.cpp
@@ -46,7 +46,7 @@
             RSD_CALL_GL(glDisable, GL_CULL_FACE);
             break;
         default:
-            LOGE("Invalid cull type");
+            rsc->setError(RS_ERROR_FATAL_DRIVER, "Invalid cull type");
             break;
     }