[Resolver] Rename matching_dependencies_from_node lamdba to be more readable

lib/cocoapods/resolver.rb

@@ -68,18 +68,20 @@ module Pod
         specs_by_target = {}
         podfile.target_definition_list.each do |target|
           specs = target.dependencies.map(&:name).map do |name|
-            s = lambda do |node|
-              d_nodes = node.outgoing_edges.select do |edge|
+
+            matching_dependencies_from_node = lambda do |node|
+              dependency_nodes = node.outgoing_edges.select do |edge|
                 edge.requirements.any? do |dependency|
-                  !dependency.from_subspec_dependency? || edge.destination.payload.available_platforms.any? { |p| target.platform.supports?(p) }
+                  !dependency.from_subspec_dependency? ||
+                    edge.destination.payload.available_platforms.any? { |p| target.platform.supports?(p) }
                 end
               end.map(&:destination)
 
-              d_nodes + d_nodes.flat_map { |n| s.call(n) }
+              dependency_nodes + dependency_nodes.flat_map { |n| matching_dependencies_from_node.call(n) }
             end
 
             node = @activated.vertex_named(name)
-            s.call(node).to_a << node
+            matching_dependencies_from_node.call(node).to_a << node
           end
 
           specs_by_target[target] = specs.