Adding error checks for ctx_load_bytes.
Adding error checks for ctx_load_bytes.

The function ctx_load_bytes() was being called without checking for return errors.
This could let to a possible evaluation of an uninitializaed variable.

Added a verification to drop packets when ctx_load_bytes() returns error.

Signed-off-by: Thales Paiva <58a73fddc840c12d640bdc1549d375454d7f5d03@accuknox.com>

tklauser/cilium,tklauser/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,tklauser/cilium,michi-covalent/cilium,cilium/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,tklauser/cilium,michi-covalent/cilium