Revert "Fix Compile Warnings (#5963)"

This reverts commit b83e16dbdd.

Found regressions like auto orientation didn't work anymore after this change, revert it

src/libslic3r/Fill/FillConcentricInternal.cpp

@@ -1,3 +1,6 @@
+#include "../ClipperUtils.hpp"
+#include "../ExPolygon.hpp"
+#include "../Surface.hpp"
 #include "../VariableWidth.hpp"
 #include "Arachne/WallToolPaths.hpp"
 

src/libslic3r/Fill/FillCrossHatch.cpp

@@ -1,5 +1,6 @@
 #include "../ClipperUtils.hpp"
 #include "../ShortestPath.hpp"
+#include "../Surface.hpp"
 #include <cmath>
 
 #include "FillCrossHatch.hpp"
@@ -64,6 +65,7 @@ static Polylines generate_transform_pattern(double inprogress, int direction, co
     odd_poly.points.reserve(num_of_cycle * one_cycle.size());
 
     // replicate to odd line
+    Point translate = Point(0, 0);
     for (size_t i = 0; i < num_of_cycle; i++) {
         Polyline odd_points;
         odd_points = Polyline(one_cycle);
@@ -150,6 +152,7 @@ static Polylines generate_infill_layers(coordf_t z_height, double repeat_ratio,
     coordf_t  period            = trans_layer_size + repeat_layer_size;
     coordf_t  remains           = z_height - std::floor(z_height / period) * period;
     coordf_t  trans_z           = remains - repeat_layer_size; // put repeat layer first.
+    coordf_t  repeat_z          = remains;
 
     int phase     = fmod(z_height, period * 2) - (period - 1); // add epsilon
     int direction = phase <= 0 ? -1 : 1;

src/libslic3r/Fill/Lightning/Generator.cpp

@@ -4,6 +4,7 @@
 #include "Generator.hpp"
 #include "TreeNode.hpp"
 
+#include "../../ClipperUtils.hpp"
 #include "../../Layer.hpp"
 #include "../../Print.hpp"
 
@@ -34,7 +35,7 @@ static  std::string get_svg_filename(std::string layer_nr_or_z, std::string tag
         rand_init = true;
     }
 
-    // int rand_num = rand() % 1000000;
+    int rand_num = rand() % 1000000;
     //makedir("./SVG");
     std::string prefix = "./SVG/";
     std::string suffix = ".svg";