Fix potential panic resulting from no results chosen to print in print menu.

Cargo.lock

@@ -263,7 +263,7 @@ dependencies = [
 
 [[package]]
 name = "cryptools"
-version = "0.12.3"
+version = "0.12.4"
 dependencies = [
  "chrono",
  "crptls",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cryptools"
-version = "0.12.3"
+version = "0.12.4"
 authors = ["scoobybejesus <scoobybejesus@users.noreply.github.com>"]
 edition = "2021"
 description = "Command-line utility for processing cryptocurrency transactions into 'lots' and 'movements'."

src/mytui/app.rs

@@ -137,6 +137,11 @@ pub fn export(
 
     println!("Attempting to export:");
 
+    if app.to_print_by_idx.is_empty() {
+        println!("  None selected.");
+        return Ok(())
+    }
+
     for report_idx in app.to_print_by_idx.iter() {
 
         println!("    {}", reports[*report_idx]);