fixup! Replace error-prone instanceof in Rules classes

Author: zonuexe

src/Rules/MissingTypehintCheck.php

@@ -108,7 +108,7 @@ public function getNonGenericObjectTypesWithGenericClass(Type $type): array
 			if ($type instanceof TemplateType) {
 				return $type;
 			}
-			if (count($type->getObjectClassNames()) > 0) {
+			if ($type->isObject()->yes()) {
 				if (count($type->getObjectClassReflections()) === 0) {
 					return $type;
 				}
@@ -128,7 +128,7 @@ public function getNonGenericObjectTypesWithGenericClass(Type $type): array
 				}
 
 				$resolvedType = TemplateTypeHelper::resolveToBounds($type);
-				if (count($resolvedType->getObjectClassNames()) === 0) {
+				if (!$resolvedType->isObject()->yes()) {
 					throw new ShouldNotHappenException();
 				}
 

src/Rules/UnusedFunctionParametersCheck.php

@@ -92,8 +92,7 @@ private function getUsedVariables(Scope $scope, $node): array
 			) {
 				foreach ($node->getArgs() as $arg) {
 					$argType = $scope->getType($arg->value);
-					if (count($argType->getConstantStrings()) === 1) {
-						$constantStringType = $argType->getConstantStrings()[0];
+					foreach ($argType->getConstantStrings() as $constantStringType) {
 						$variableNames[] = $constantStringType->getValue();
 					}
 				}