rust: fix cargo clippy --all-features

rust/src/dns/detect.rs

@@ -79,11 +79,7 @@ pub extern "C" fn rs_dns_opcode_match(
         return 0;
     };
 
-    if match_opcode(detect, header_flags) {
-        1
-    } else {
-        0
-    }
+    match_opcode(detect, header_flags).into()
 }
 
 fn match_opcode(detect: &DetectDnsOpcode, flags: u16) -> bool {

rust/src/filecontainer.rs

@@ -69,9 +69,6 @@ impl Default for FileContainer {
 }
 
 impl FileContainer {
-    pub fn default() -> FileContainer {
-        FileContainer { head:ptr::null_mut(), tail:ptr::null_mut() }
-    }
     pub fn free(&mut self) {
         SCLogDebug!("freeing self");
         if let Some(c) = unsafe {SC} {

rust/src/frames.rs

@@ -65,7 +65,7 @@ impl Frame {
                     stream_slice,
                     offset as u32,
                     frame_len,
-                    if stream_slice.flags() & STREAM_TOSERVER != 0 { 0 } else { 1 },
+                    (stream_slice.flags() & STREAM_TOSERVER == 0).into(),
                     frame_type,
                 )
             };

rust/src/smb/smb2_records.rs

@@ -87,8 +87,8 @@ struct SmbFlags {
 
 fn parse_smb2_flags(i: &[u8]) -> IResult<&[u8], SmbFlags> {
     let (i, val) = le_u32(i)?;
-    let direction = if val & SMB2_FLAGS_SERVER_TO_REDIR != 0 { 1 } else { 0 };
-    let async_command = if val & SMB2_FLAGS_ASYNC_COMMAND != 0 { 1 } else { 0 };
+    let direction = u8::from(val & SMB2_FLAGS_SERVER_TO_REDIR != 0);
+    let async_command = u8::from(val & SMB2_FLAGS_ASYNC_COMMAND != 0);
     Ok((i, SmbFlags {
         direction,
         async_command,