branches/zip: trx_weight_cmp(): Add const qualifiers.

include/trx0trx.h

@@ -379,9 +379,9 @@ considered heavier than ones that have not. */
 int
 trx_weight_cmp(
 /*===========*/
-			/* out: <0, 0 or >0; similar to strcmp(3) */
-	trx_t*	a,	/* in: the first transaction to be compared */
-	trx_t*	b);	/* in: the second transaction to be compared */
+				/* out: <0, 0 or >0; similar to strcmp(3) */
+	const trx_t*	a,	/* in: the first transaction to be compared */
+	const trx_t*	b);	/* in: the second transaction to be compared */
 
 /* Signal to a transaction */
 struct trx_sig_struct{

trx/trx0trx.c

@@ -1751,9 +1751,9 @@ considered heavier than ones that have not. */
 int
 trx_weight_cmp(
 /*===========*/
-			/* out: <0, 0 or >0; similar to strcmp(3) */
-	trx_t*	a,	/* in: the first transaction to be compared */
-	trx_t*	b)	/* in: the second transaction to be compared */
+				/* out: <0, 0 or >0; similar to strcmp(3) */
+	const trx_t*	a,	/* in: the first transaction to be compared */
+	const trx_t*	b)	/* in: the second transaction to be compared */
 {
 	ibool	a_notrans_edit;
 	ibool	b_notrans_edit;