license: Add "Content-Type" to 404 response

The `set_404()` function doesn't do this, as it makes no assumptions
about response content type.

1 files changed, 1 insertions, 1 deletions

diff --git a/license-generator/src/bin/license.rs b/license-generator/src/bin/license.rs
index 5010fff..8c77670 100644
--- a/license-generator/src/bin/license.rs
+++ b/license-generator/src/bin/license.rs
@@ -61,7 +61,7 @@ where W: 'a + Write {
         let page_404 = include_str!("../../../404.html");
         response::set_404(self.writer)
             .and_then(|_|
-                Ok(write!(self.writer, "\n{}", page_404)?)
+                Ok(write!(self.writer, "Content-Type: text/html\n\n{}", page_404)?)
             ).unwrap_or(())
     }