Do not display the help in red for fconv

src/Tools/jaby_engine_fconv/src/main.rs

@@ -25,9 +25,7 @@ enum SubCommands {
     SimpleTIM(reduced_tim::Arguments)
 }
 
-fn run_main() -> Result<(), Error> {
-    match CommandLine::try_parse() {
-        Ok(cmd) => {
+fn run_main(cmd: CommandLine) -> Result<(), Error> {
     let mut input       = tool_helper::open_input(cmd.input_file)?;
     let mut buffer      = Vec::<u8>::new();
     let mut output_file = tool_helper::open_output(cmd.output_file)?;
@@ -57,18 +55,15 @@ fn run_main() -> Result<(), Error> {
     }
 
     Ok(())
-        },
-        Err(error) => Err({
-                let mut error = Error::from_error(error);
-
-                error.exit_code = 0;
-                error
-            })
-    }    
 }
 
 fn main() {
-    if let Err(error) = run_main() {
+    match CommandLine::try_parse() {
+        Ok(cmd)    => {
+            if let Err(error) = run_main(cmd) {
                 exit_with_error(error);
             }
+        },
+        Err(error) => eprintln!("{}", error)
+    }
 }