Remove trailing spaces in some output

Author: Alexander Law <exclusion@gmail.com>

src/backend/executor/nodeMergejoin.c

@@ -587,7 +587,7 @@ ExecMergeTupleDump(MergeJoinState *mergestate)
 	ExecMergeTupleDumpInner(mergestate);
 	ExecMergeTupleDumpMarked(mergestate);
 
-	printf("******** \n");
+	printf("********\n");
 }
 #endif
 

src/bin/pg_waldump/pg_waldump.c

@@ -683,7 +683,7 @@ usage(void)
 	printf(_("%s decodes and displays PostgreSQL transaction logs for debugging.\n\n"),
 		   progname);
 	printf(_("Usage:\n"));
-	printf(_("  %s [OPTION]... [STARTSEG [ENDSEG]] \n"), progname);
+	printf(_("  %s [OPTION]... [STARTSEG [ENDSEG]]\n"), progname);
 	printf(_("\nOptions:\n"));
 	printf(_("  -b, --bkp-details      output detailed information about backup blocks\n"));
 	printf(_("  -e, --end=RECPTR       stop reading at log position RECPTR\n"));

src/interfaces/libpq/fe-connect.c

@@ -3017,7 +3017,7 @@ keep_going:						/* We will come back to here until there is
 				restoreErrorMessage(conn, &savedMessage);
 				appendPQExpBuffer(&conn->errorMessage,
 				  libpq_gettext("test \"show transaction_read_only\" failed "
-								" on \"%s:%s\" \n"),
+								" on \"%s:%s\"\n"),
 								  conn->connhost[conn->whichhost].host,
 								  conn->connhost[conn->whichhost].port);
 				conn->status = CONNECTION_OK;