rust: address clippy errors

rust/src/conf.rs

@@ -81,13 +81,8 @@ pub fn conf_get(key: &str) -> Option<&str> {
 // Return the value of key as a boolean. A value that is not set is
 // the same as having it set to false.
 pub fn conf_get_bool(key: &str) -> bool {
-    if let Some(val) = conf_get(key) {
-        match val {
-            "1" | "yes" | "true" | "on" => {
-                return true;
-            },
-            _ => {},
-        }
+    if let Some("1" | "yes" | "true" | "on") = conf_get(key) {
+        return true;
     }
 
     return false;

rust/src/dcerpc/dcerpc.rs

@@ -504,7 +504,7 @@ impl DCERPCState {
     ///      description: call_id param derived from TCP Header
     /// * `dir`:
     ///         type: enum Direction
-    ///  description: direction of the flow
+    ///   description: direction of the flow
     ///
     /// Return value:
     /// Option mutable reference to DCERPCTransaction

rust/src/dcerpc/detect.rs

@@ -212,13 +212,8 @@ pub extern "C" fn rs_dcerpc_iface_match(
     }
 
     match state.get_hdr_type() {
-        Some(x) => match x {
-            DCERPC_TYPE_REQUEST | DCERPC_TYPE_RESPONSE => {}
-            _ => {
-                return 0;
-            }
-        },
-        None => {
+        Some(DCERPC_TYPE_REQUEST | DCERPC_TYPE_RESPONSE) => {},
+        _ => {
             return 0;
         }
     };