signature.c: Replaced outcontent parameter with NULL in CMS_verify()
signature.c: Replaced outcontent parameter with NULL in CMS_verify()

This fixes malloc issues when verifying larger files. The outcontent
parameter was passed but not used. Passing NULL is an appropriate alternative
as CMS_verify() replaces this by using BIO_s_null() internally.

Signed-off-by: Enrico Jorns <a2e5f936c390f36494e46e71bcfbe365bb1e8c49@pengutronix.de>

jluebbe/rauc,rauc/rauc,ejoerns/rauc,ejoerns/rauc,jluebbe/rauc,rauc/rauc,rauc/rauc,jluebbe/rauc,ejoerns/rauc