Make sure io_check_output_fields() is called on all ranks since it now also...

Make sure io_check_output_fields() is called on all ranks since it now also initialises some fields in the output_options object

examples/main.c

@@ -841,7 +841,6 @@ int main(int argc, char *argv[]) {
   } else {
 
     /* Verify that the fields to dump actually exist */
-    if (myrank == 0)
     io_check_output_fields(output_options, with_cosmology, with_fof,
                            with_structure_finding);
 

src/output_options.c

@@ -51,6 +51,9 @@ const char* compression_level_names[compression_level_count] = {
 void output_options_init(struct swift_params* parameter_file, int mpi_rank,
                          struct output_options* output_options) {
 
+  /* Start by zero-ing everything */
+  bzero(output_options, sizeof(struct output_options));
+
   /* Load select_output */
   struct swift_params* select_output =
       (struct swift_params*)malloc(sizeof(struct swift_params));