message: fix exception output
diff: #define EOS_ASSERT( expr, exc_type, FORMAT, ... ) \
  FC_MULTILINE_MACRO_BEGIN \
  if( !(expr) ) { \
  - EOS_THROW(exc_type, FORMAT); \
  + EOS_THROW(exc_type, FORMAT, __VA_ARGS__); \
  } \
  FC_MULTILINE_MACRO_END
  #endif
  