always reset colors settings on the output stream after writing (#375)

This is according to:
https://docs.rs/termcolor/1.1.2/termcolor/#example-using-standardstream
Not resetting the color settings on the stream will leak the style to
the shell otherwise.
This can be observed when listing mailboxes prior to this patch.

Signed-off-by: Robert Günzler <r@gnzler.io>

Co-authored-by: Clément DOUIN <soywod@users.noreply.github.com>

cli/src/output/print.rs

@@ -8,12 +8,14 @@ pub trait Print {
 
 impl Print for &str {
     fn print(&self, writer: &mut dyn WriteColor) -> Result<()> {
-        writeln!(writer, "{}", self).context("cannot write string to writer")
+        writeln!(writer, "{}", self).context("cannot write string to writer")?;
+        Ok(writer.reset()?)
     }
 }
 
 impl Print for String {
     fn print(&self, writer: &mut dyn WriteColor) -> Result<()> {
-        self.as_str().print(writer)
+        self.as_str().print(writer)?;
+        Ok(writer.reset()?)
     }
 }

cli/src/ui/table.rs

@@ -134,14 +134,8 @@ impl Print for Cell {
             .context(format!(r#"cannot apply colors to cell "{}""#, self.value))?;
 
         // Writes the colorized cell to stdout
-        write!(writer, "{}", self.value)
-            .context(format!(r#"cannot print cell "{}""#, self.value))?;
-
-        // Resets color after cell
-        writer
-            .reset()
-            .context(format!(r#"cannot reset color in cell "{}""#, self.value))?;
-        write!(writer, "").context(format!(r#"cannot print cell "{}""#, self.value))
+        write!(writer, "{}", self.value).context(format!(r#"cannot print cell "{}""#, self.value))?;
+        Ok(writer.reset()?)
     }
 }