Fix syntax typo

src/parallel_io.c

@@ -932,7 +932,8 @@ void prepare_file(struct engine* e, const char* baseName, long long N_total[6],
   /* Print the gravity parameters */
   if (e->policy & engine_policy_cosmology) {
     h_grp = H5Gcreate(h_file, "/Cosmology", H5P_DEFAULT, H5P_DEFAULT,
-                      H5P_DEFAULT) if (h_grp < 0)
+                      H5P_DEFAULT);
+    if (h_grp < 0)
         error("Error while creating cosmology group");
     cosmology_write_model(h_grp, e->cosmology);
     H5Gclose(h_grp);