accept NULL in 'free' functions

diff --git a/crypto/ec/ec_lib.c b/crypto/ec/ec_lib.c
index 0597087cb78f545d87dc6c30a058169980515d7e..f469b679d86affa93a19cc292e8122a8adde3bb5 100644 (file)
--- a/crypto/ec/ec_lib.c
+++ b/crypto/ec/ec_lib.c
@@ -112,6 +112,8 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
 
 void EC_GROUP_free(EC_GROUP *group)
        {
 
 void EC_GROUP_free(EC_GROUP *group)
        {

+       if (!group) return;
+

        if (group->meth->group_finish != 0)
                group->meth->group_finish(group);
 
        if (group->meth->group_finish != 0)
                group->meth->group_finish(group);
 


@@ -128,6 +130,8 @@ void EC_GROUP_free(EC_GROUP *group)
 
 void EC_GROUP_clear_free(EC_GROUP *group)
        {
 
 void EC_GROUP_clear_free(EC_GROUP *group)
        {

+       if (!group) return;
+

        if (group->meth->group_clear_finish != 0)
                group->meth->group_clear_finish(group);
        else if (group->meth != NULL && group->meth->group_finish != 0)
        if (group->meth->group_clear_finish != 0)
                group->meth->group_clear_finish(group);
        else if (group->meth != NULL && group->meth->group_finish != 0)


@@ -408,6 +412,8 @@ EC_POINT *EC_POINT_new(const EC_GROUP *group)
 
 void EC_POINT_free(EC_POINT *point)
        {
 
 void EC_POINT_free(EC_POINT *point)
        {

+       if (!point) return;
+

        if (point->meth->point_finish != 0)
                point->meth->point_finish(point);
        OPENSSL_free(point);
        if (point->meth->point_finish != 0)
                point->meth->point_finish(point);
        OPENSSL_free(point);


@@ -416,6 +422,8 @@ void EC_POINT_free(EC_POINT *point)
 
 void EC_POINT_clear_free(EC_POINT *point)
        {
 
 void EC_POINT_clear_free(EC_POINT *point)
        {

+       if (!point) return;
+

        if (point->meth->point_clear_finish != 0)
                point->meth->point_clear_finish(point);
        else if (point->meth != NULL && point->meth->point_finish != 0)
        if (point->meth->point_clear_finish != 0)
                point->meth->point_clear_finish(point);
        else if (point->meth != NULL && point->meth->point_finish != 0)