VSIReadDirRecursive recurses forever

[Kurt Schwehr]

I'm seeing VSIReadDirRecursive recurse forever in a small test program pointing to a directory.

source:trunk/gdal/port/cpl_vsil.cpp#L131​

Proposed fix:

cpl_vsil.cpp

@@ -130 +130 @@
 
         for ( ; i < nCount; i++ )
         {
+            // Do not recurse up the tree.
+            // TODO(schwehr): Is this portable to all filesystems?
+            if (EQUAL(".", papszFiles[i]) || EQUAL("..", papszFiles[i]))
+              continue;
+
             // build complete file name for stat
             osTemp1.clear();
             osTemp1.append( pszPath );