removed useless type juggling

Author: dg

src/Framework/Assert.php

@@ -390,10 +390,7 @@ public static function noError(callable $function): void
 	public static function match(string $pattern, $actual, string $description = null): void
 	{
 		self::$counter++;
-		if (!is_string($pattern)) {
-			throw new \Exception('Pattern must be a string.');
-
-		} elseif (!is_scalar($actual)) {
+		if (!is_scalar($actual)) {
 			self::fail(self::describe('%1 should match %2', $description), $actual, $pattern);
 
 		} elseif (!self::isMatching($pattern, $actual)) {
@@ -458,8 +455,8 @@ public static function with($obj, \Closure $closure)
 	 */
 	public static function isMatching(string $pattern, $actual, bool $strict = false): bool
 	{
-		if (!is_string($pattern) || !is_scalar($actual)) {
-			throw new \Exception('Value and pattern must be strings.');
+		if (!is_scalar($actual)) {
+			throw new \Exception('Value must be strings.');
 		}
 
 		$old = ini_set('pcre.backtrack_limit', '10000000');

src/Runner/Job.php

@@ -169,7 +169,7 @@ public function isRunning(): bool
 			foreach (explode("\r\n", $headers) as $header) {
 				$pos = strpos($header, ':');
 				if ($pos !== false) {
-					$this->headers[trim(substr($header, 0, $pos))] = (string) trim(substr($header, $pos + 1));
+					$this->headers[trim(substr($header, 0, $pos))] = trim(substr($header, $pos + 1));
 				}
 			}
 		}