Fix pacman search output if there are no results

src/commands/pacman.rs

@@ -14,7 +14,7 @@ pub fn query_pacman(ctx: Context, msg: Message, args: Vec<&str>) {
             |_e| EMPTY_RESULT,
         );
         // this is 1 for most packages and 2 if there’s a second version in testing
-        if response.results.is_empty() {
+        if response.results.len() != 0 {
             respond_with_results(msg.channel_id, &response.results, &ctx);
             return;
         }