Fix: Check whether header value contains msgidHEADmaster

This is better because of the "References:" header field. The field may
contain several entries.
As the `mailparse` library does not return a `Vec<>` of values here, we
simlpy use the `String::contains()` function to check whether the mails
could be related.

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/main.rs b/src/main.rs
index 717c715..bf60e85 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -115,12 +115,12 @@ fn main() {
                             || key == "Message-Id"
                             || key == "References"
                         {
-                            let value = hdr.get_value().unwrap_or_else(|e| {
-                                eprintln!("Failed to get mail header value: {} - {:?}", path.display(), e);
-                                exit(1)
-                            });
-
-                            value == msgid
+                            hdr.get_value()
+                                .unwrap_or_else(|e| {
+                                    eprintln!("Failed to get mail header value: {} - {:?}", path.display(), e);
+                                    exit(1)
+                                })
+                                .contains(msgid)
                         } else {
                             false
                         }