fixed codacy C++ warnings / issues

bindings/java/jni/dataModel_SleuthkitJNI.cpp

tests/fs_attrlist_apis.cpp

tests/fs_fname_apis.cpp

tools/autotools/tsk_comparedir.cpp

tools/autotools/tsk_recover.cpp

tools/fstools/ils.cpp

tools/hashtools/md5.c

tools/hashtools/sha1.c

tools/vstools/mmls.cpp

tsk/auto/auto_db.cpp

tsk/auto/db_postgresql.cpp

tsk/auto/db_sqlite.cpp

tsk/base/tsk_error.c

tsk/fs/dcat_lib.c

tsk/fs/exfatfs.c

tsk/fs/ext2fs.c

tsk/fs/ext2fs_journal.c

tsk/fs/fatfs_dent.cpp

tsk/fs/fatfs_meta.c

tsk/fs/fatxxfs.c