Add cast to quiet compiler warning.

Bryan Henderson · Bryan Henderson · commit d6c06feb1803 · 1996-12-23T08:39:27.000Z
diff --git a/src/backend/executor/nodeAgg.c b/src/backend/executor/nodeAgg.c
@@ -256,7 +256,7 @@ ExecAgg(Agg *node)
 	for(i = 0; i < nagg; i++) {
 	    AttrNumber attnum;
 	    int2 attlen;
-	    Datum newVal = NULL;
+	    Datum newVal = (Datum) NULL;
 	    AggFuncInfo *aggfns = &aggFuncInfo[i];
 	    Datum args[2];
 	    Node *tagnode = NULL;
