Drop cruft in db code brought in by 1.8x.

We don't allocate memory to receive data from db, so the cruft left
was only accessing db twice for lone lines.

Author: lichray

common/line.c

@@ -92,7 +92,6 @@ db_get(
 	recno_t l1, l2;
 	CHAR_T *wp;
 	size_t wlen;
-	size_t nlen;
 
 	/*
 	 * The underlying recno stuff handles zero by returning NULL, but
@@ -152,8 +151,6 @@ db_get(
 	ep->c_lno = OOBLNO;
 
 nocache:
-	nlen = 1024;
-retry:
 	/* Get the line from the underlying database. */
 	key.data = &lno;
 	key.size = sizeof(lno);
@@ -169,11 +166,6 @@ err3:		if (lenp != NULL)
 		if (pp != NULL)
 			*pp = NULL;
 		return (1);
-	case 0:
-		if (data.size > nlen) {
-			nlen = data.size;
-			goto retry;
-		}
 	}
 
 	if (FILE2INT(sp, data.data, data.size, wp, wlen)) {
@@ -544,8 +536,6 @@ db_last(
 	case 1:
 		*lnop = 0;
 		return (0);
-	case 0:
-		;
 	}
 
 	memcpy(&lno, key.data, sizeof(lno));