Standardize the name of the exception variables

Author: javiereguiluz

Definition/ArrayNode.php

@@ -256,7 +256,7 @@ protected function finalizeValue($value)
 
             try {
                 $value[$name] = $child->finalize($value[$name]);
-            } catch (UnsetKeyException $unset) {
+            } catch (UnsetKeyException $e) {
                 unset($value[$name]);
             }
         }

Definition/BaseNode.php

@@ -302,14 +302,10 @@ final public function finalize($value)
         foreach ($this->finalValidationClosures as $closure) {
             try {
                 $value = $closure($value);
-            } catch (Exception $correctEx) {
-                throw $correctEx;
-            } catch (\Exception $invalid) {
-                throw new InvalidConfigurationException(sprintf(
-                    'Invalid configuration for path "%s": %s',
-                    $this->getPath(),
-                    $invalid->getMessage()
-                ), $invalid->getCode(), $invalid);
+            } catch (Exception $e) {
+                throw $e;
+            } catch (\Exception $e) {
+                throw new InvalidConfigurationException(sprintf('Invalid configuration for path "%s": %s', $this->getPath(), $e->getMessage()), $e->getCode(), $e);
             }
         }
 

Definition/PrototypedArrayNode.php

@@ -211,7 +211,7 @@ protected function finalizeValue($value)
             $this->prototype->setName($k);
             try {
                 $value[$k] = $this->prototype->finalize($v);
-            } catch (UnsetKeyException $unset) {
+            } catch (UnsetKeyException $e) {
                 unset($value[$k]);
             }
         }