Fix a couple of warnings found by PVS Studio (#6372)

include/extractor/node_based_edge.hpp

@@ -135,7 +135,8 @@ struct NodeBasedEdgeWithOSM : NodeBasedEdge
 
 inline NodeBasedEdgeClassification::NodeBasedEdgeClassification()
     : forward(false), backward(false), is_split(false), roundabout(false), circular(false),
-      startpoint(false), restricted(false)
+      startpoint(false), restricted(false), highway_turn_classification(0),
+      access_turn_classification(0)
 {
 }
 

include/extractor/restriction.hpp

@@ -28,7 +28,7 @@ struct TurnRestriction
     // The turn sequence that the restriction applies to.
     TurnPath turn_path;
     // Indicates if the restriction turn *must* or *must not* be taken.
-    bool is_only;
+    bool is_only = false;
     // We represent conditional and unconditional restrictions with the same structure.
     // Unconditional restrictions will have empty conditions.
     std::vector<util::OpeningHours> condition;

include/extractor/scripting_environment_lua.hpp

@@ -38,17 +38,17 @@ struct LuaScriptingContext final
     RasterContainer raster_sources;
     sol::state state;
 
-    bool has_turn_penalty_function;
-    bool has_node_function;
-    bool has_way_function;
-    bool has_segment_function;
+    bool has_turn_penalty_function = false;
+    bool has_node_function = false;
+    bool has_way_function = false;
+    bool has_segment_function = false;
 
     sol::function turn_function;
     sol::function way_function;
     sol::function node_function;
     sol::function segment_function;
 
-    int api_version;
+    int api_version = 4;
     sol::table profile_table;
 
     // Reference to immutable location dependent data and locations memo