db: make get_param_name() check for NULL sm->sym pointers
commit55db79d2fdcd913f5115113517dd4a3eda3dfaa3
authorDan Carpenter <dan.carpenter@oracle.com>
Wed, 13 Jan 2016 12:19:44 +0000 (13 15:19 +0300)
committerDan Carpenter <dan.carpenter@oracle.com>
Wed, 13 Jan 2016 12:19:44 +0000 (13 15:19 +0300)
tree9a6d6bc35167ef4e6d68f7e2cf6e58d1a07d08a0
parente9bf71bdc490605409386c9e9e69c6a2722ea605
db: make get_param_name() check for NULL sm->sym pointers

These days Smatch extra is storing values for BINOP expressions like
"foo + bar" and in that case the ->sym pointer can be NULL.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
smatch_db.c