cleaning memory

vcf_stats_report.py

@@ -57,8 +57,18 @@ def makehtml(gdata):
             return e.charCodeAt(0);
         });
         var output  = new Zlib.Inflate(compressData).decompress();
-        var strData = String.fromCharCode.apply(null, new Uint16Array(output));
+        var out16   = new Uint16Array(output);
+        var QUANTUM = 32768;
+        var strData = "";
+        for (var i = 0, len = out16.length; i < len; i += QUANTUM) {
+          strData += String.fromCharCode.apply(null, out16.subarray(i, Math.min(i + QUANTUM, len)));
+        }
         window.dataall = JSON.parse(strData);
+        delete base64Data;
+        delete compressData;
+        delete output;
+        delete out16;
+        delete stdData;
     </script>
     <script>
       google.load('visualization', '1', {packages: ['corechart']});