files: suppress feedback when writing an emergency or temporary file

This fixes https://savannah.gnu.org/bugs/?56474.

Bug existed since commit 47770bd3 from two weeks ago.

src/files.c

@@ -1859,6 +1859,7 @@ bool write_file(const char *name, FILE *f_open, bool tmp,
 		}
 	}
 
+	if (!tmp)
 		statusbar(_("Writing..."));
 
 	while (fileptr != NULL) {