Change !...is_some to is_none

diff --git a/src/client.rs b/src/client.rs
index effb98c0eef7a577e08cc974d2fb3280593d4d9a..8b8e35f8a3144c3a96b1d5a60aac5100ee46e838 100644 (file)
--- a/src/client.rs
+++ b/src/client.rs
@@ -746,7 +746,7 @@ impl Client {
         let mut ac = ac.clone();
         // Don't overwrite a cached account with a 'source' to one
         // without.
-        if !ac.source.is_some() {
+        if ac.source.is_none() {
             if let Some(source) =
                 self.accounts.get(&ac.id).and_then(|ac| ac.source.as_ref())
             {