fix(graphical): correctly space related errors

src/handlers/graphical.rs

@@ -401,8 +401,8 @@ impl GraphicalReportHandler {
             let mut inner_renderer = self.clone();
             // Re-enable the printing of nested cause chains for related errors
             inner_renderer.with_cause_chain = true;
-            writeln!(f)?;
             for rel in related {
+                writeln!(f)?;
                 match rel.severity() {
                     Some(Severity::Error) | None => write!(f, "Error: ")?,
                     Some(Severity::Warning) => write!(f, "Warning: ")?,

tests/graphical.rs

@@ -389,11 +389,13 @@ fn wrapping_related_errors() -> Result<(), MietteError> {
         help: it cannot be helped... woulddddddd
               you really want to get rid of an
               error that's so cute?
+      
       Warning:
         ⚠ Wah wah: I may be small, but I'll
         │ cause a proper bout of trouble — justt
         │ try wrapping this mess of a line,
         │ buddo!
+      
       Advice:
         ☞ Wah wah: I may be small, but I'll
         │ cause a proper bout of trouble — justt
@@ -1557,7 +1559,6 @@ Error: oops::my::bad
  2 │   text
    ╰────
   help: try doing it better next time?
-
 "#
     .trim_start()
     .to_string();
@@ -1724,6 +1725,7 @@ Error: oops::my::related::error
  2 │   text
    ╰────
   help: try doing it better next time?
+
 Warning: oops::my::related::warning
 
   ⚠ oops!
@@ -1734,6 +1736,7 @@ Warning: oops::my::related::warning
  2 │   text
    ╰────
   help: try doing it better next time?
+
 Advice: oops::my::related::advice
 
   ☞ oops!

tests/test_diagnostic_source_macro.rs

@@ -276,6 +276,7 @@ fn test_nested_cause_chains_for_related_errors_are_output() {
          ·       ──┬─
          ·         ╰── here
          ╰────
+      
       Error:
         × A complex error happened
          ╭────