Remove extraneous | ... while bison 1.28 doesn't object, newer versions

do.

contrib/seg/segparse.y

@@ -92,7 +92,6 @@ range:
 	    ((SEG *)result)->l_ext = ( $1.ext ? $1.ext : '\0' );
 	    ((SEG *)result)->u_ext = '-';
           }
-      ;
       |
           RANGE boundary {
 	    ((SEG *)result)->lower = -HUGE;