Add InfallibleExt util trait

src/main.rs

@@ -21,6 +21,7 @@ mod logger;
 mod macros;
 mod store;
 mod ui;
+mod util;
 mod vault;
 
 use std::path::PathBuf;

src/util.rs

@@ -0,0 +1,15 @@
+use std::convert::Infallible;
+
+pub trait InfallibleExt {
+    type Inner;
+
+    fn infallible(self) -> Self::Inner;
+}
+
+impl<T> InfallibleExt for Result<T, Infallible> {
+    type Inner = T;
+
+    fn infallible(self) -> T {
+        self.expect("infallible")
+    }
+}