Merge pull request #78 from ashnazg/count

array or Countable error in 7.2

PEAR/PackageFile/v2.php

@@ -2046,7 +2046,7 @@ function _mergeTag($manip, $contents, $order)
         if (is_array($manip[$tag]) && !empty($manip[$tag]) && isset($manip[$tag][0])) {
             $manip[$tag][] = $contents;
         } else {
-            if (!count($manip[$tag])) {
+            if (is_array($manip[$tag]) && !count($manip[$tag])) {
                 $manip[$tag] = $contents;
             } else {
                 $manip[$tag] = array($manip[$tag]);