Remove unused parameter from place_seam method (SoftFever#6421)

Author: vovodroid

src/libslic3r/GCode.cpp

@@ -4493,8 +4493,7 @@ std::string GCode::extrude_loop(ExtrusionLoop loop, std::string description, dou
     float seam_overhang = std::numeric_limits<float>::lowest();
     if (!m_config.spiral_mode && description == "perimeter") {
         assert(m_layer != nullptr);
-        bool is_outer_wall_first = m_config.wall_sequence == WallSequence::OuterInner;
-        m_seam_placer.place_seam(m_layer, loop, is_outer_wall_first, this->last_pos(), seam_overhang);
+        m_seam_placer.place_seam(m_layer, loop, this->last_pos(), seam_overhang);
     } else
         loop.split_at(last_pos, false);
 

src/libslic3r/GCode/SeamPlacer.cpp

@@ -1486,7 +1486,7 @@ void SeamPlacer::init(const Print &print, std::function<void(void)> throw_if_can
   }
 }
 
-void SeamPlacer::place_seam(const Layer *layer, ExtrusionLoop &loop, bool external_first,
+void SeamPlacer::place_seam(const Layer *layer, ExtrusionLoop &loop,
                             const Point &last_pos, float& overhang) const {
   using namespace SeamPlacerImpl;
   const PrintObject *po = layer->object();

src/libslic3r/GCode/SeamPlacer.hpp

@@ -143,7 +143,7 @@ class SeamPlacer {
 
   void init(const Print &print, std::function<void(void)> throw_if_canceled_func);
 
-  void place_seam(const Layer *layer, ExtrusionLoop &loop, bool external_first, const Point &last_pos, float& overhang) const;
+  void place_seam(const Layer *layer, ExtrusionLoop &loop, const Point &last_pos, float& overhang) const;
 private:
   void gather_seam_candidates(const PrintObject *po, const SeamPlacerImpl::GlobalModelInfo &global_model_info);
   void calculate_candidates_visibility(const PrintObject *po,