[GR-2798] JNI version of Rf_setAttrib updates Java array.

com.oracle.truffle.r.native/fficall/src/jni/Rinternals.c

@@ -403,6 +403,7 @@ SEXP Rf_getAttrib(SEXP vec, SEXP name) {
 SEXP Rf_setAttrib(SEXP vec, SEXP name, SEXP val) {
 	TRACE(TARGppp, vec,name, val);
 	JNIEnv *thisenv = getEnv();
+	updateNativeArrays(thisenv);
 	(*thisenv)->CallVoidMethod(thisenv, UpCallsRFFIObject, Rf_setAttribMethodID, vec, name, val);
 	return val;
 }