Small fixes

pystencils_walberla/templates/SweepInnerOuter.tmpl.h

@@ -44,6 +44,7 @@
 #   pragma GCC diagnostic push
 #   pragma GCC diagnostic ignored "-Wunused-parameter"
 #   pragma GCC diagnostic ignored "-Wreorder"
+#   pragma GCC diagnostic ignored "-Wconversion"
 #endif
 
 namespace walberla {
@@ -54,7 +55,7 @@ class {{class_name}}
 {
 public:
     {{class_name}}( {{kernel|generate_constructor_parameters}}, const Cell & outerWidth=Cell(1, 1, 1))
-        : {{ kernel|generate_constructor_initializer_list }}, outerWidth_(outerWidth)
+        : {{ kernel|generate_constructor_initializer_list }}{% if kernel|generate_constructor_initializer_list|length %},{% endif %} outerWidth_(outerWidth)
     {};
 
     {{ kernel| generate_destructor(class_name) |indent(4) }}