Merge pull request #2036 from THE-Amrit-mahto-05/fix/process-word-file-safely

fix: process_word_file propagates errors instead of panicking

src/rust/src/parser.rs

@@ -114,7 +114,7 @@ fn process_word_file(filename: &str, list: &mut Vec<String>) -> Result<(), std::
 
     for line in reader.lines() {
         num += 1;
-        let line = line.unwrap();
+        let line = line?;
         if line.starts_with('#') {
             continue;
         }