src/marpaESLIF.c: Prevent propagating a tconvp that failed if needed needed, and stay silent in lexeme mode when appending data
src/marpaESLIF.c: Prevent propagating a tconvp that failed if needed needed, and stay silent in lexeme mode when appending data

jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF