better test for list of encodings

1 files changed, 3 insertions, 5 deletions

diff --git a/encoding.js b/encoding.js
index 2f0ad8c..d263fd1 100644
--- a/encoding.js
+++ b/encoding.js
@@ -5,10 +5,7 @@ function decode_charsets( str, encoding ) {
     return decode_jis( str );
   }
 
-  map = encodings[encoding];
-  if( map == null ) {
-    map = enc_8859_1;
-  }
+  map = encodings[encoding] || enc_8859_1;
 
   for( var i=0; i< str.length; ++i ) {
     var append = str.charCodeAt(i) & 0xff;
@@ -132,4 +129,5 @@ var encodings = {
   "ibm437":enc_CP437,"ibm737":enc_CP737,"ibm775":enc_CP775,"ibm850":enc_CP850,"ibm852":enc_CP852,"ibm855":enc_CP855,"ibm857":enc_CP857,
   "ibm860":enc_CP860,"ibm861":enc_CP861,"ibm862":enc_CP862,"ibm863":enc_CP863,"ibm864":enc_CP864,"ibm865":enc_CP865,"ibm866":enc_CP866,
   "cp869": enc_CP869,"cp-gr": enc_CP869,"ibm869":enc_CP869,"windows-874": enc_CP874,"cp874":enc_CP874,"ibm874":enc_CP874
-};
\ No newline at end of file
+};
+