Possible null pointer dereference

[reedjc]

Internal jenkins' run with cppcheck reported:

State File Line Severity Type Inconclusive Message

unchanged nmsg/input_frag.c 226 error nullPointer false
Possible null pointer dereference: nmsg - otherwise it is redundant to
check if nmsg is null at line 227

unchanged nmsg/input_nmsg.c 62 error nullPointer false
Possible null pointer dereference: msg - otherwise it is redundant to
check if msg is null at line 63

[reedjc]

This was handled in pull request 64.