reset rotation after each label (merge from devbr6)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@31751 15284696-431f-4ddb-bdfa-cd5b030d7da7

ps/ps.map/do_labels.c

@@ -237,6 +237,7 @@ do_label (FILE *fd, int font_override)
 	    hwidth = 0.;
 	    width = 1.;
 	    fontsize = 0;
+	    rotate = 0.;
 
             continue;
         }