bug #48972 [HttpFoundation] Fix memory limit problems in BinaryFileResponse (glady)

This PR was squashed before being merged into the 5.4 branch.

Discussion
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[HttpFoundation] Fix memory limit problems in BinaryFileResponse

see #48692

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #48692
| License       | MIT
| Doc PR        | -

Commits
-------

8a9949521f [HttpFoundation] Fix memory limit problems in BinaryFileResponse

Author: nicolas-grekas

BinaryFileResponse.php

@@ -34,7 +34,7 @@ class BinaryFileResponse extends Response
     protected $offset = 0;
     protected $maxlen = -1;
     protected $deleteFileAfterSend = false;
-    protected $chunkSize = 8 * 1024;
+    protected $chunkSize = 16 * 1024;
 
     /**
      * @param \SplFileInfo|string $file               The file to stream
@@ -267,7 +267,7 @@ public function prepare(Request $request)
                 $range = $request->headers->get('Range');
 
                 if (str_starts_with($range, 'bytes=')) {
-                    [$start, $end] = explode('-', substr($range, 6), 2) + [0];
+                    [$start, $end] = explode('-', substr($range, 6), 2) + [1 => 0];
 
                     $end = ('' === $end) ? $fileSize - 1 : (int) $end;
 
@@ -341,14 +341,15 @@ public function sendContent()
 
             $length = $this->maxlen;
             while ($length && !feof($file)) {
-                $read = ($length > $this->chunkSize) ? $this->chunkSize : $length;
-                $length -= $read;
+                $read = $length > $this->chunkSize || 0 > $length ? $this->chunkSize : $length;
+                $read = stream_copy_to_stream($file, $out, $read);
 
-                stream_copy_to_stream($file, $out, $read);
-
-                if (connection_aborted()) {
+                if (false === $read || connection_aborted()) {
                     break;
                 }
+                if (0 < $length) {
+                    $length -= $read;
+                }
             }
 
             fclose($out);