Generic/DocComment: improve code coverage

Adds two tests to check that the sniffer triggers an error when it finds
empty doc comments.

Author: rodrigoprimo

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.1.inc

@@ -258,3 +258,13 @@
  *
  * @return void
  */
+
+// Tests to check handling empty doc comments.
+/**
+ */
+
+/**
+		*
+ *
+   *
+ */

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.1.inc.fixed

@@ -263,3 +263,13 @@
  *
  * @return void
  */
+
+// Tests to check handling empty doc comments.
+/**
+ */
+
+/**
+		*
+ *
+   *
+ */

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.1.js

@@ -258,3 +258,13 @@
  *
  * @return void
  */
+
+// Tests to check handling empty doc comments.
+/**
+ */
+
+/**
+		*
+ *
+   *
+ */

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.1.js.fixed

@@ -263,3 +263,13 @@
  *
  * @return void
  */
+
+// Tests to check handling empty doc comments.
+/**
+ */
+
+/**
+		*
+ *
+   *
+ */

src/Standards/Generic/Tests/Commenting/DocCommentUnitTest.php

@@ -98,6 +98,8 @@ public function getErrorList($testFile='')
                 246 => 1,
                 248 => 1,
                 249 => 1,
+                263 => 1,
+                266 => 1,
             ];
 
         default: