Fix eagle tracers output

Recent change in tracers/EAGLE/tracers_io.h introduced a bug: The count for the elements for star outputs is incorrect, and misses several indices. This leads to HDF5 crashing output at snapshot zero because it cannot create a dataset without a name, nor without any content.

added bug label

requested review from @dc-husk1

assigned to @matthieu

added 1 commit

• 4bf186d8 - corrected number of items to write in tracers_io.h

Compare with previous version

Looks good, thanks for catching it and the fix!

mentioned in commit adf9aee1

merged