fix more trivial cppcheck errors and warnings

common/config/config_cmdline.c

nfapi/oai_integration/nfapi_vnf.c

openair1/PHY/CODING/3gpplte_sse.c

openair1/PHY/CODING/3gpplte_turbo_decoder_sse.c

openair1/PHY/CODING/3gpplte_turbo_decoder_sse_16bit.c

openair1/PHY/CODING/3gpplte_turbo_decoder_sse_8bit.c

openair1/PHY/CODING/ccoding_byte.c

openair1/PHY/CODING/ccoding_byte_lte.c

openair1/PHY/CODING/lte_rate_matching.c

openair1/PHY/CODING/lte_segmentation.c

openair1/PHY/LTE_ESTIMATION/lte_dl_channel_estimation.c

openair1/PHY/LTE_TRANSPORT/prach.c