Remove stray linebreak when running root -q with no input files

There is an additional line break when running `root -q` with no input
files:

```txt
   ------------------------------------------------------------------
  | Welcome to ROOT 6.36.02                        https://root.cern |
  | (c) 1995-2025, The ROOT Team; conception: R. Brun, F. Rademakers |
  | Built for linuxx8664gcc on Jul 08 2025, 21:22:35                 |
  | From tags/6-36-02@6-36-02                                        |
  | With g++ (GCC) 14.3.0                                            |
  | Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q'  |
   ------------------------------------------------------------------

```

I don't think the second newline at the end should be there.

The reason why I suggest to remove it now is because it's still there
when you disable the banner, as running `root -b -q -l` gives:
```

```
That is a bit awkward for something that is supposed to do absolutely
nothing, and pollutes the build log with blank likes when it calls
`root -b -q -l` to implicitly generate the modules.

Author: guitargeek

README/ReleaseNotes/v638/index.md

@@ -75,7 +75,7 @@ RooAbsData *dataForChan = found != splits.end() ? found->get() : nullptr;
   are filled at very high rates. Use lower number in this case.
 - The Snapshot method has been refactored so that it does not need anymore compile-time information (i.e. either template arguments or JIT-ting) to know the input column types. This means that any Snapshot call that specifies the template arguments, e.g. `Snapshot<int, float>(..., {"intCol", "floatCol"})` is now redundant and the template arguments can safely be removed from the call. At the same time, Snapshot does not need to JIT compile the column types, practically giving huge speedups depending on the number of columns that need to be written to disk. In certain cases (e.g. when writing O(10000) columns) the speedup can be larger than an order of magnitude. The Snapshot template is now deprecated and it will issue a compile-time warning when called. The function overload is scheduled for removal in ROOT 6.40.
 
-## PyROOT
+## Python Interface
 
 ### Deprecate the attribute pythonization of `TDirectory` in favor of item-getting syntax
 
@@ -89,8 +89,14 @@ The deprecated pythonization with the `__getattr__` syntax is now removed.
 It was originally schedeuled for removal in 6.34 according to the 6.32 release notes, but since it was still used quite a bit,
 the deprecation period was extended.
 
-## Command line utils
-- `rootls` has a new native implementation and can now be run without Python. The options and the output of the new rootls are identical to the previous implementation but it should run faster (typically about 3 to 4x faster).
+## ROOT executable
+
+- Removed stray linebreak when running `root -q` with no input files.
+  This ensures that there is no superfluous output when running `root` without the banner and without input files (`root -q -l`).
+
+## Command-line utilities
+- The `rootls` utility has a new native implementation and can now be run without Python.
+  The options and the output of the new rootls are identical to the previous implementation but it should run faster (typically about 3 to 4x faster).
 
 ## JavaScript ROOT
 - A new configuration option `Jupyter.JSRoot` was added in .rootrc to set the default mode for JSROOT in Jupyter notebooks (on or off).

core/rint/src/TRint.cxx

@@ -498,7 +498,6 @@ void TRint::Run(Bool_t retrn)
    }
 
    if (QuitOpt()) {
-      printf("\n");
       if (retrn) return;
       Terminate(fCaughtSignal != -1 ? fCaughtSignal + 128 : 0);
    }