Remove useless 'needlock' argument from GetXLogInsertRecPtr. It was always

passed as 'true'.

src/backend/access/transam/xlog.c

@@ -9411,16 +9411,14 @@ GetStandbyFlushRecPtr(void)
  * Get latest WAL insert pointer
  */
 XLogRecPtr
-GetXLogInsertRecPtr(bool needlock)
+GetXLogInsertRecPtr(void)
 {
 	XLogCtlInsert *Insert = &XLogCtl->Insert;
 	XLogRecPtr	current_recptr;
 
-	if (needlock)
-		LWLockAcquire(WALInsertLock, LW_SHARED);
+	LWLockAcquire(WALInsertLock, LW_SHARED);
 	INSERT_RECPTR(current_recptr, Insert, Insert->curridx);
-	if (needlock)
-		LWLockRelease(WALInsertLock);
+	LWLockRelease(WALInsertLock);
 
 	return current_recptr;
 }

src/backend/access/transam/xlogfuncs.c

@@ -200,7 +200,7 @@ pg_current_xlog_insert_location(PG_FUNCTION_ARGS)
 				 errmsg("recovery is in progress"),
 				 errhint("WAL control functions cannot be executed during recovery.")));
 
-	current_recptr = GetXLogInsertRecPtr(true);
+	current_recptr = GetXLogInsertRecPtr();
 
 	snprintf(location, sizeof(location), "%X/%X",
 			 current_recptr.xlogid, current_recptr.xrecoff);

src/include/access/xlog.h

@@ -288,7 +288,7 @@ extern bool XLogInsertAllowed(void);
 extern void GetXLogReceiptTime(TimestampTz *rtime, bool *fromStream);
 extern XLogRecPtr GetXLogReplayRecPtr(XLogRecPtr *restoreLastRecPtr);
 extern XLogRecPtr GetStandbyFlushRecPtr(void);
-extern XLogRecPtr GetXLogInsertRecPtr(bool needlock);
+extern XLogRecPtr GetXLogInsertRecPtr(void);
 extern XLogRecPtr GetXLogWriteRecPtr(void);
 extern bool RecoveryIsPaused(void);
 extern void SetRecoveryPause(bool recoveryPause);