ZP-1096 Check for mapi externsion first and fail early.

Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/utils/utils.php

@@ -219,19 +219,17 @@ class Utils {
      * @return boolean installed version is superior to the checked string
      */
     static public function CheckMapiExtVersion($version = "") {
+        if (!extension_loaded("mapi")) {
+            return false;
+        }
         // compare build number if requested
         if (preg_match('/^\d+$/', $version) && strlen($version) > 3) {
             $vs = preg_split('/-/', phpversion("mapi"));
             return ($version <= $vs[1]);
         }
-
-        if (extension_loaded("mapi")){
         if (version_compare(phpversion("mapi"), $version) == -1){
             return false;
         }
-        }
-        else
-            return false;
 
         return true;
     }