fix: coalesce nil start line to 1

Fixes #160

lib/next_ls/runtime/sidecar.ex

@@ -15,14 +15,23 @@ defmodule NextLS.Runtime.Sidecar do
   end
 
   def handle_info({:tracer, payload}, state) do
+    payload = replace_nil(payload, :line, 1)
     DB.insert_symbol(state.db, payload)
 
     {:noreply, state}
   end
 
   def handle_info({{:tracer, :reference}, payload}, state) do
+    payload = replace_nil(payload, :line, 1)
     DB.insert_reference(state.db, payload)
 
     {:noreply, state}
   end
+
+  defp replace_nil(data, field, replacement) do
+    case data do
+      %{^field => nil} -> %{data | field => replacement}
+      %{} -> data
+    end
+  end
 end