Bug #86: Deletion of unnecessary checks before a few calls of asn1c functions

The following functions return immediately if a null pointer was passed.
* asn1p_constraint_free
* asn1p_paramlist_free
* asn1p_ref_free
* asn1p_value_free
* asn1p_wsyntx_free

It is therefore not needed that a function caller repeats a corresponding check.

This issue was fixed by using the software "Coccinelle 1.0.4".
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>

libasn1parser/asn1p_constr.c

@@ -23,13 +23,9 @@ void
 asn1p_constraint_free(asn1p_constraint_t *ct) {
 	if(ct) {
 
-		if(ct->containedSubtype)
 		asn1p_value_free(ct->containedSubtype);
-		if(ct->value)
 		asn1p_value_free(ct->value);
-		if(ct->range_start)
 		asn1p_value_free(ct->range_start);
-		if(ct->range_stop)
 		asn1p_value_free(ct->range_stop);
 
 		if(ct->elements) {

libasn1parser/asn1p_expr.c

@@ -246,19 +246,12 @@ asn1p_expr_free(asn1p_expr_t *expr) {
 		}
 
 		free(expr->Identifier);
-		if(expr->reference)
 		asn1p_ref_free(expr->reference);
-		if(expr->constraints)
 		asn1p_constraint_free(expr->constraints);
-		if(expr->combined_constraints)
 		asn1p_constraint_free(expr->combined_constraints);
-		if(expr->lhs_params)
 		asn1p_paramlist_free(expr->lhs_params);
-		if(expr->value)
 		asn1p_value_free(expr->value);
-		if(expr->marker.default_value)
 		asn1p_value_free(expr->marker.default_value);
-		if(expr->with_syntax)
 		asn1p_wsyntx_free(expr->with_syntax);
 
 		if(expr->data && expr->data_free)

libasn1parser/asn1p_param.c

@@ -27,7 +27,6 @@ asn1p_paramlist_free(asn1p_paramlist_t *pl) {
 		if(pl->params) {
 			int i = pl->params_count;
 			while(i--) {
-				if(pl->params[i].governor)
 				asn1p_ref_free(pl->params[i].governor);
 				free(pl->params[i].argument);
 				pl->params[i].governor = 0;
@@ -82,7 +81,6 @@ asn1p_paramlist_add_param(asn1p_paramlist_t *pl, asn1p_ref_t *gov, char *arg) {
 		pl->params_count++;
 		return 0;
 	} else {
-		if(pl->params[pl->params_count].governor)
 		asn1p_ref_free(pl->params[pl->params_count].governor);
 		return -1;
 	}