Fixes: Memory leak in libuchardet/src/nsSBCSGroupProber.cpp
Fixes: Memory leak in libuchardet/src/nsSBCSGroupProber.cpp

FilterWithoutEnglishLetters don't allocate memory only when
it returns FALSE but the newBuf1 was freed only somtimes.

community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server,community-ssu/evolution-data-server