"for each" fix, for modified prototypes

Fix "for..each" in case Array or Object prototypes are modified globally.

Author: yadimon

functions/filesystem/pathinfo.js

@@ -3,6 +3,7 @@ function pathinfo(path, options) {
   // original by: Nate
   //  revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
   // improved by: Brett Zamir (http://brett-zamir.me)
+  // improved by: Dmitry Gorelenkov
   //    input by: Timo
   //        note: Inspired by actual PHP source: php5-5.2.6/ext/standard/string.c line #1559
   //        note: The way the bitwise arguments are handled allows for greater flexibility
@@ -58,7 +59,9 @@ function pathinfo(path, options) {
   };
   // PATHINFO_ALL sums up all previously defined PATHINFOs (could just pre-calculate)
   for (optName in OPTS) {
-    OPTS.PATHINFO_ALL = OPTS.PATHINFO_ALL | OPTS[optName];
+    if(OPTS.hasOwnProperty(optName)){
+      OPTS.PATHINFO_ALL = OPTS.PATHINFO_ALL | OPTS[optName];
+    }
   }
   if (typeof options !== 'number') {
     // Allow for a single string or an array of string flags
@@ -123,12 +126,14 @@ function pathinfo(path, options) {
   // If array contains only 1 element: return string
   cnt = 0;
   for (opt in tmp_arr) {
-    cnt++;
+    if(tmp_arr.hasOwnProperty(opt)){
+      cnt++;
+    }
   }
   if (cnt == 1) {
     return tmp_arr[opt];
   }
 
   // Return full-blown array
   return tmp_arr;
-}
+}