optimize strcat a little

1 files changed, 3 insertions, 3 deletions

diff --git a/src/library.js b/src/library.js
index 8a8ab142..6b5ab687 100644
--- a/src/library.js
+++ b/src/library.js
@@ -4391,10 +4391,10 @@ LibraryManager.library = {
   strcat__deps: ['strlen'],
   strcat: function(pdest, psrc) {
     pdest = pdest|0; psrc = psrc|0;
-    var len = 0, i = 0;
-    var len = _strlen(pdest);
+    var i = 0;
+    pdest = (pdest + _strlen(pdest))|0;
     do {
-      {{{ makeCopyValues('pdest+len+i', 'psrc+i', 1, 'i8', null, 1) }}};
+      {{{ makeCopyValues('pdest+i', 'psrc+i', 1, 'i8', null, 1) }}};
       i = (i+1)|0;
     } while ({{{ makeGetValueAsm('psrc', 'i-1', 'i8') }}} != 0);
     return pdest|0;