Assorted compilation and test fixes

related to 7c4f5240, per build farm

Author: Petr Jelinek <petr.jelinek@2ndquadrant.com>

src/backend/nodes/copyfuncs.c

@@ -4450,7 +4450,10 @@ _copyAlterSubscriptionStmt(const AlterSubscriptionStmt *from)
 {
 	AlterSubscriptionStmt *newnode = makeNode(AlterSubscriptionStmt);
 
+	COPY_SCALAR_FIELD(kind);
 	COPY_STRING_FIELD(subname);
+	COPY_STRING_FIELD(conninfo);
+	COPY_NODE_FIELD(publication);
 	COPY_NODE_FIELD(options);
 
 	return newnode;

src/backend/nodes/equalfuncs.c

@@ -2199,7 +2199,10 @@ static bool
 _equalAlterSubscriptionStmt(const AlterSubscriptionStmt *a,
 							const AlterSubscriptionStmt *b)
 {
+	COMPARE_SCALAR_FIELD(kind);
 	COMPARE_STRING_FIELD(subname);
+	COMPARE_STRING_FIELD(conninfo);
+	COMPARE_NODE_FIELD(publication);
 	COMPARE_NODE_FIELD(options);
 
 	return true;

src/include/replication/worker_internal.h

@@ -46,7 +46,7 @@ typedef struct LogicalRepWorker
 } LogicalRepWorker;
 
 /* Memory context for cached variables in apply worker. */
-MemoryContext			ApplyCacheContext;
+extern MemoryContext				ApplyCacheContext;
 
 /* libpqreceiver connection */
 extern struct WalReceiverConn	   *wrconn;