Standardize the name of the exception variables

Author: javiereguiluz

DataCollector/RequestDataCollector.php

@@ -125,7 +125,7 @@ public function collect(Request $request, Response $response, \Exception $except
                         'file' => $r->getFileName(),
                         'line' => $r->getStartLine(),
                     );
-                } catch (\ReflectionException $re) {
+                } catch (\ReflectionException $e) {
                     if (is_callable($controller)) {
                         // using __call or  __callStatic
                         $this->data['controller'] = array(

Tests/DependencyInjection/ContainerAwareHttpKernelTest.php

@@ -137,10 +137,10 @@ public function testHandleRestoresThePreviousRequestOnException($type)
         try {
             $kernel->handle($request, $type);
             $this->fail('->handle() suppresses the controller exception');
-        } catch (\PHPUnit_Framework_Exception $exception) {
-            throw $exception;
-        } catch (\Exception $actual) {
-            $this->assertSame($expected, $actual, '->handle() throws the controller exception');
+        } catch (\PHPUnit_Framework_Exception $e) {
+            throw $e;
+        } catch (\Exception $e) {
+            $this->assertSame($expected, $e, '->handle() throws the controller exception');
         }
     }