Separated from: #8106

When having a incomplete CA cert (for example missing a newline at the end) in the function load_cafile the code after case BR_PEM_END_OBJ: will not be executed. This will result in an extra ta (ca.anchors) that does not have its data set. Because ta->dn.len is not set (thus a random value) this will result in EXC_BAD_ACCESS in BearSSL because it expects correct values. The fix is to only add the new ta after case BR_PEM_END_OBJ:.