minor #4380 Remove remaining usages of get_class() (fabpot)

This PR was merged into the 4.x branch.

Discussion
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Remove remaining usages of get_class()

Commits
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cf603b19c1 Remove remaining usages of get_class()

src/Environment.php

@@ -233,7 +233,7 @@ class Environment
         if ($this->cache instanceof RemovableCacheInterface) {
             $this->cache->remove($name, $cls);
         } else {
-            throw new \LogicException(\sprintf('The "%s" cache class does not support removing template cache as it does not implement the "RemovableCacheInterface" interface.', \get_class($this->cache)));
+            throw new \LogicException(\sprintf('The "%s" cache class does not support removing template cache as it does not implement the "RemovableCacheInterface" interface.', $this->cache::class));
         }
     }
 

src/Node/Expression/Test/ConstantTest.php

@@ -35,9 +35,8 @@ class ConstantTest extends TestExpression
 
         if ($this->getNode('arguments')->hasNode('1')) {
             $compiler
-                ->raw('get_class(')
                 ->subcompile($this->getNode('arguments')->getNode(1))
-                ->raw(')."::".')
+                ->raw('::class."::".')
             ;
         }