minor symfony#24962 [Console] remove dead code (Tobion)

This PR was merged into the 2.7 branch.

Discussion
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[Console] remove dead code

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->
| BC breaks?    | no
| Deprecations? | no <!-- don't forget to update UPGRADE-*.md files -->
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Part of symfony#24961 for 2.7

Commits
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65f2b13 [Console] remove dead code

Author: chalasr

src/Symfony/Component/Console/Application.php

@@ -112,15 +112,13 @@ public function run(InputInterface $input = null, OutputInterface $output = null
         try {
             $e = null;
             $exitCode = $this->doRun($input, $output);
-        } catch (\Exception $x) {
-            $e = $x;
-        } catch (\Throwable $x) {
-            $e = new FatalThrowableError($x);
+        } catch (\Exception $e) {
+        } catch (\Throwable $e) {
         }
 
         if (null !== $e) {
-            if (!$this->catchExceptions || !$x instanceof \Exception) {
-                throw $x;
+            if (!$this->catchExceptions || !$e instanceof \Exception) {
+                throw $e;
             }
 
             if ($output instanceof ConsoleOutputInterface) {