minor #33154 Parameter type leftovers (derrabus)

This PR was merged into the 5.0-dev branch.

Discussion
----------

Parameter type leftovers

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #32179
| License       | MIT
| Doc PR        | N/A

Commits
-------

34eda04866 Added more parameter type declarations.

Author: nicolas-grekas

AbstractStream.php

@@ -30,7 +30,7 @@ abstract class AbstractStream
 
     private $debug = '';
 
-    public function write(string $bytes, $debug = true): void
+    public function write(string $bytes, bool $debug = true): void
     {
         if ($debug) {
             foreach (explode("\n", trim($bytes)) as $line) {

Smtp/Stream/AbstractStream.php

@@ -30,7 +30,7 @@ abstract class AbstractStream
 
     private $debug = '';
 
-    public function write(string $bytes, $debug = true): void
+    public function write(string $bytes, bool $debug = true): void
     {
         if ($debug) {
             foreach (explode("\n", trim($bytes)) as $line) {

Stream/AbstractStream.php

@@ -30,7 +30,7 @@ abstract class AbstractStream
 
     private $debug = '';
 
-    public function write(string $bytes, $debug = true): void
+    public function write(string $bytes, bool $debug = true): void
     {
         if ($debug) {
             foreach (explode("\n", trim($bytes)) as $line) {

Transport/Smtp/Stream/AbstractStream.php

@@ -30,7 +30,7 @@ abstract class AbstractStream
 
     private $debug = '';
 
-    public function write(string $bytes, $debug = true): void
+    public function write(string $bytes, bool $debug = true): void
     {
         if ($debug) {
             foreach (explode("\n", trim($bytes)) as $line) {