updates per narfbg request

I did a bunch of Git tutorials, and (i think) understand a lot more
now. this update is to address narfbg comments, and add to pull request.
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
index 3cb30db..688b495 100644
--- a/system/libraries/Calendar.php
+++ b/system/libraries/Calendar.php
@@ -548,8 +548,6 @@
 					$this->replacements[$val] = $this->replacements[substr($val, 0, -6)];
 				}
 			}
-	
-			return $this;
 		}
 		elseif (is_array($this->template))
 		{
@@ -562,4 +560,4 @@
 }
 
 /* End of file Calendar.php */
-/* Location: ./system/libraries/Calendar.php */
+/* Location: ./system/libraries/Calendar.php */
\ No newline at end of file