main: Write a newline after YAML output

It turns out the `YamlEmitter` doesn't output a newline at the end.
Output a final newline as this is a command line program.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 2ac689c..8b4cb5b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -100,6 +100,12 @@ fn main() {
             let mut emitter = yaml_rust::YamlEmitter::new(&mut buffer);
             emitter.dump(&yaml_data).unwrap();
 
+            // YamlEmitter doesn't output a trailing newline.
+            {
+                use std::io::Write;
+                writeln!(stdout_handle, "").unwrap();
+            }
+
             dbconn.close().unwrap();
         },
     };