Make sure that the best fit can be computed when the redshift is estimated...

Make sure that the best fit can be computed when the redshift is estimated rather than given as an input.

pcigale/analysis_modules/pdf_analysis/workers.py

@@ -236,9 +236,10 @@ def bestfit(oidx, obs):
     params = deepcopy(gbl_params.from_index(best_index))
     if obs.redshift >= 0.:
         params[gbl_params.modules.index('redshifting')]['redshift'] = obs.redshift
+        corr_dz = compute_corr_dz(obs.redshift, obs.distance)
+    else:  # The model redshift is always exact in redhisfting mode
+        corr_dz = 1.
     sed = gbl_warehouse.get_sed(gbl_params.modules, params)
-
-    corr_dz = compute_corr_dz(obs.redshift, obs.distance)
     scaling = gbl_results.best.scaling[oidx]
 
     for band in gbl_results.best.flux: